diff options
Diffstat (limited to 'arch/x86/include/asm')
84 files changed, 1188 insertions, 523 deletions
diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h index fcd20c6dc..67b68d0d1 100644 --- a/arch/x86/include/asm/alternative.h +++ b/arch/x86/include/asm/alternative.h @@ -117,7 +117,7 @@ extern void callthunks_patch_builtin_calls(void); extern void callthunks_patch_module_calls(struct callthunk_sites *sites, struct module *mod); extern void *callthunks_translate_call_dest(void *dest); -extern int x86_call_depth_emit_accounting(u8 **pprog, void *func); +extern int x86_call_depth_emit_accounting(u8 **pprog, void *func, void *ip); #else static __always_inline void callthunks_patch_builtin_calls(void) {} static __always_inline void @@ -128,7 +128,7 @@ static __always_inline void *callthunks_translate_call_dest(void *dest) return dest; } static __always_inline int x86_call_depth_emit_accounting(u8 **pprog, - void *func) + void *func, void *ip) { return 0; } diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index dddd3fc19..e6ab0cf15 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -47,6 +47,10 @@ extern void x86_32_probe_apic(void); static inline void x86_32_probe_apic(void) { } #endif +extern u32 cpuid_to_apicid[]; + +#define CPU_ACPIID_INVALID U32_MAX + #ifdef CONFIG_X86_LOCAL_APIC extern int apic_verbosity; @@ -55,8 +59,6 @@ extern int local_apic_timer_c2_ok; extern bool apic_is_disabled; extern unsigned int lapic_timer_period; -extern u32 cpuid_to_apicid[]; - extern enum apic_intr_mode_id apic_intr_mode; enum apic_intr_mode_id { APIC_PIC, @@ -170,6 +172,14 @@ extern bool apic_needs_pit(void); extern void apic_send_IPI_allbutself(unsigned int vector); +extern void topology_register_apic(u32 apic_id, u32 acpi_id, bool present); +extern void topology_register_boot_apic(u32 apic_id); +extern int topology_hotplug_apic(u32 apic_id, u32 acpi_id); +extern void topology_hotunplug_apic(unsigned int cpu); +extern void topology_apply_cmdline_limits_early(void); +extern void topology_init_possible_cpus(void); +extern void topology_reset_possible_cpus_up(void); + #else /* !CONFIG_X86_LOCAL_APIC */ static inline void lapic_shutdown(void) { } #define local_apic_timer_c2_ok 1 @@ -184,6 +194,8 @@ static inline void apic_intr_mode_init(void) { } static inline void lapic_assign_system_vectors(void) { } static inline void lapic_assign_legacy_vector(unsigned int i, bool r) { } static inline bool apic_needs_pit(void) { return true; } +static inline void topology_apply_cmdline_limits_early(void) { } +static inline void topology_init_possible_cpus(void) { } #endif /* !CONFIG_X86_LOCAL_APIC */ #ifdef CONFIG_X86_X2APIC @@ -290,16 +302,11 @@ struct apic { /* Probe, setup and smpboot functions */ int (*probe)(void); int (*acpi_madt_oem_check)(char *oem_id, char *oem_table_id); - bool (*apic_id_registered)(void); - bool (*check_apicid_used)(physid_mask_t *map, u32 apicid); void (*init_apic_ldr)(void); - void (*ioapic_phys_id_map)(physid_mask_t *phys_map, physid_mask_t *retmap); u32 (*cpu_present_to_apicid)(int mps_cpu); - u32 (*phys_pkg_id)(u32 cpuid_apic, int index_msb); u32 (*get_apic_id)(u32 id); - u32 (*set_apic_id)(u32 apicid); /* wakeup_secondary_cpu */ int (*wakeup_secondary_cpu)(u32 apicid, unsigned long start_eip); @@ -528,7 +535,6 @@ extern int default_apic_id_valid(u32 apicid); extern u32 apic_default_calc_apicid(unsigned int cpu); extern u32 apic_flat_calc_apicid(unsigned int cpu); -extern void default_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap); extern u32 default_cpu_present_to_apicid(int mps_cpu); void apic_send_nmi_to_offline_cpu(unsigned int cpu); diff --git a/arch/x86/include/asm/asm-prototypes.h b/arch/x86/include/asm/asm-prototypes.h index 0e8207451..25466c4d2 100644 --- a/arch/x86/include/asm/asm-prototypes.h +++ b/arch/x86/include/asm/asm-prototypes.h @@ -12,6 +12,7 @@ #include <asm/special_insns.h> #include <asm/preempt.h> #include <asm/asm.h> +#include <asm/fred.h> #include <asm/gsseg.h> #include <asm/nospec-branch.h> diff --git a/arch/x86/include/asm/barrier.h b/arch/x86/include/asm/barrier.h index d0795b5fa..63bdc6b85 100644 --- a/arch/x86/include/asm/barrier.h +++ b/arch/x86/include/asm/barrier.h @@ -33,7 +33,7 @@ * Returns: * 0 - (index < size) */ -static inline unsigned long array_index_mask_nospec(unsigned long index, +static __always_inline unsigned long array_index_mask_nospec(unsigned long index, unsigned long size) { unsigned long mask; diff --git a/arch/x86/include/asm/cmpxchg_64.h b/arch/x86/include/asm/cmpxchg_64.h index c1d6cd58f..44b08b53a 100644 --- a/arch/x86/include/asm/cmpxchg_64.h +++ b/arch/x86/include/asm/cmpxchg_64.h @@ -62,7 +62,7 @@ static __always_inline u128 arch_cmpxchg128_local(volatile u128 *ptr, u128 old, asm volatile(_lock "cmpxchg16b %[ptr]" \ CC_SET(e) \ : CC_OUT(e) (ret), \ - [ptr] "+m" (*(_ptr)), \ + [ptr] "+m" (*ptr), \ "+a" (o.low), "+d" (o.high) \ : "b" (n.low), "c" (n.high) \ : "memory"); \ diff --git a/arch/x86/include/asm/coco.h b/arch/x86/include/asm/coco.h index a368afce3..aa6c8f8ca 100644 --- a/arch/x86/include/asm/coco.h +++ b/arch/x86/include/asm/coco.h @@ -14,6 +14,7 @@ enum cc_vendor { #ifdef CONFIG_ARCH_HAS_CC_PLATFORM extern enum cc_vendor cc_vendor; extern u64 cc_mask; + static inline void cc_set_mask(u64 mask) { RIP_REL_REF(cc_mask) = mask; diff --git a/arch/x86/include/asm/cpu.h b/arch/x86/include/asm/cpu.h index f8f9a9b79..aa30fd8ca 100644 --- a/arch/x86/include/asm/cpu.h +++ b/arch/x86/include/asm/cpu.h @@ -9,18 +9,10 @@ #include <linux/percpu.h> #include <asm/ibt.h> -#ifdef CONFIG_SMP - -extern void prefill_possible_map(void); - -#else /* CONFIG_SMP */ - -static inline void prefill_possible_map(void) {} - +#ifndef CONFIG_SMP #define cpu_physical_id(cpu) boot_cpu_physical_apicid #define cpu_acpi_id(cpu) 0 #define safe_smp_processor_id() 0 - #endif /* CONFIG_SMP */ #ifdef CONFIG_HOTPLUG_CPU diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 76b3b00ff..3c7434329 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -324,7 +324,9 @@ #define X86_FEATURE_FZRM (12*32+10) /* "" Fast zero-length REP MOVSB */ #define X86_FEATURE_FSRS (12*32+11) /* "" Fast short REP STOSB */ #define X86_FEATURE_FSRC (12*32+12) /* "" Fast short REP {CMPSB,SCASB} */ +#define X86_FEATURE_FRED (12*32+17) /* Flexible Return and Event Delivery */ #define X86_FEATURE_LKGS (12*32+18) /* "" Load "kernel" (userspace) GS */ +#define X86_FEATURE_WRMSRNS (12*32+19) /* "" Non-serializing WRMSR */ #define X86_FEATURE_AMX_FP16 (12*32+21) /* "" AMX fp16 Support */ #define X86_FEATURE_AVX_IFMA (12*32+23) /* "" Support for VPMADD52[H,L]UQ */ #define X86_FEATURE_LAM (12*32+26) /* Linear Address Masking */ @@ -440,6 +442,7 @@ #define X86_FEATURE_SEV (19*32+ 1) /* AMD Secure Encrypted Virtualization */ #define X86_FEATURE_VM_PAGE_FLUSH (19*32+ 2) /* "" VM Page Flush MSR is supported */ #define X86_FEATURE_SEV_ES (19*32+ 3) /* AMD Secure Encrypted Virtualization - Encrypted State */ +#define X86_FEATURE_SEV_SNP (19*32+ 4) /* AMD Secure Encrypted Virtualization - Secure Nested Paging */ #define X86_FEATURE_V_TSC_AUX (19*32+ 9) /* "" Virtual TSC_AUX */ #define X86_FEATURE_SME_COHERENT (19*32+10) /* "" AMD hardware-enforced cache coherency */ #define X86_FEATURE_DEBUG_SWAP (19*32+14) /* AMD SEV-ES full debug state swap support */ @@ -462,6 +465,7 @@ * * Reuse free bits when adding new feature flags! */ +#define X86_FEATURE_AMD_LBR_PMC_FREEZE (21*32+ 0) /* AMD LBR and PMC Freeze */ #define X86_FEATURE_CLEAR_BHB_LOOP (21*32+ 1) /* "" Clear branch history at syscall entry using SW loop */ #define X86_FEATURE_BHI_CTRL (21*32+ 2) /* "" BHI_DIS_S HW control available */ #define X86_FEATURE_CLEAR_BHB_HW (21*32+ 3) /* "" BHI_DIS_S HW control enabled */ diff --git a/arch/x86/include/asm/cpuid.h b/arch/x86/include/asm/cpuid.h index 9bee3e7bf..6b122a31d 100644 --- a/arch/x86/include/asm/cpuid.h +++ b/arch/x86/include/asm/cpuid.h @@ -127,6 +127,42 @@ static inline unsigned int cpuid_edx(unsigned int op) return edx; } +static inline void __cpuid_read(unsigned int leaf, unsigned int subleaf, u32 *regs) +{ + regs[CPUID_EAX] = leaf; + regs[CPUID_ECX] = subleaf; + __cpuid(regs + CPUID_EAX, regs + CPUID_EBX, regs + CPUID_ECX, regs + CPUID_EDX); +} + +#define cpuid_subleaf(leaf, subleaf, regs) { \ + static_assert(sizeof(*(regs)) == 16); \ + __cpuid_read(leaf, subleaf, (u32 *)(regs)); \ +} + +#define cpuid_leaf(leaf, regs) { \ + static_assert(sizeof(*(regs)) == 16); \ + __cpuid_read(leaf, 0, (u32 *)(regs)); \ +} + +static inline void __cpuid_read_reg(unsigned int leaf, unsigned int subleaf, + enum cpuid_regs_idx regidx, u32 *reg) +{ + u32 regs[4]; + + __cpuid_read(leaf, subleaf, regs); + *reg = regs[regidx]; +} + +#define cpuid_subleaf_reg(leaf, subleaf, regidx, reg) { \ + static_assert(sizeof(*(reg)) == 4); \ + __cpuid_read_reg(leaf, subleaf, regidx, (u32 *)(reg)); \ +} + +#define cpuid_leaf_reg(leaf, regidx, reg) { \ + static_assert(sizeof(*(reg)) == 4); \ + __cpuid_read_reg(leaf, 0, regidx, (u32 *)(reg)); \ +} + static __always_inline bool cpuid_function_is_indexed(u32 function) { switch (function) { diff --git a/arch/x86/include/asm/crash_core.h b/arch/x86/include/asm/crash_reserve.h index 041020da8..7835b2cdf 100644 --- a/arch/x86/include/asm/crash_core.h +++ b/arch/x86/include/asm/crash_reserve.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _X86_CRASH_CORE_H -#define _X86_CRASH_CORE_H +#ifndef _X86_CRASH_RESERVE_H +#define _X86_CRASH_RESERVE_H /* 16M alignment for crash kernel regions */ #define CRASH_ALIGN SZ_16M @@ -41,4 +41,4 @@ static inline unsigned long crash_low_size_default(void) #define HAVE_ARCH_ADD_CRASH_RES_TO_IOMEM_EARLY -#endif /* _X86_CRASH_CORE_H */ +#endif /* _X86_CRASH_RESERVE_H */ diff --git a/arch/x86/include/asm/current.h b/arch/x86/include/asm/current.h index dd4b67101..bf5953883 100644 --- a/arch/x86/include/asm/current.h +++ b/arch/x86/include/asm/current.h @@ -18,7 +18,7 @@ struct pcpu_hot { struct task_struct *current_task; int preempt_count; int cpu_number; -#ifdef CONFIG_CALL_DEPTH_TRACKING +#ifdef CONFIG_MITIGATION_CALL_DEPTH_TRACKING u64 call_depth; #endif unsigned long top_of_stack; @@ -37,8 +37,15 @@ static_assert(sizeof(struct pcpu_hot) == 64); DECLARE_PER_CPU_ALIGNED(struct pcpu_hot, pcpu_hot); +/* const-qualified alias to pcpu_hot, aliased by linker. */ +DECLARE_PER_CPU_ALIGNED(const struct pcpu_hot __percpu_seg_override, + const_pcpu_hot); + static __always_inline struct task_struct *get_current(void) { + if (IS_ENABLED(CONFIG_USE_X86_SEG_SUPPORT)) + return this_cpu_read_const(const_pcpu_hot.current_task); + return this_cpu_read_stable(pcpu_hot.current_task); } diff --git a/arch/x86/include/asm/debugreg.h b/arch/x86/include/asm/debugreg.h index 0cec92c43..fdbbbfec7 100644 --- a/arch/x86/include/asm/debugreg.h +++ b/arch/x86/include/asm/debugreg.h @@ -5,7 +5,9 @@ #include <linux/bug.h> #include <linux/percpu.h> #include <uapi/asm/debugreg.h> + #include <asm/cpufeature.h> +#include <asm/msr.h> DECLARE_PER_CPU(unsigned long, cpu_dr7); @@ -159,4 +161,26 @@ static inline unsigned long amd_get_dr_addr_mask(unsigned int dr) } #endif +static inline unsigned long get_debugctlmsr(void) +{ + unsigned long debugctlmsr = 0; + +#ifndef CONFIG_X86_DEBUGCTLMSR + if (boot_cpu_data.x86 < 6) + return 0; +#endif + rdmsrl(MSR_IA32_DEBUGCTLMSR, debugctlmsr); + + return debugctlmsr; +} + +static inline void update_debugctlmsr(unsigned long debugctlmsr) +{ +#ifndef CONFIG_X86_DEBUGCTLMSR + if (boot_cpu_data.x86 < 6) + return; +#endif + wrmsrl(MSR_IA32_DEBUGCTLMSR, debugctlmsr); +} + #endif /* _ASM_X86_DEBUGREG_H */ diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h index ab97b22ac..62dc9f59e 100644 --- a/arch/x86/include/asm/desc.h +++ b/arch/x86/include/asm/desc.h @@ -46,6 +46,7 @@ struct gdt_page { } __attribute__((aligned(PAGE_SIZE))); DECLARE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page); +DECLARE_INIT_PER_CPU(gdt_page); /* Provide the original GDT */ static inline struct desc_struct *get_cpu_gdt_rw(unsigned int cpu) @@ -402,8 +403,6 @@ static inline void set_desc_limit(struct desc_struct *desc, unsigned long limit) desc->limit1 = (limit >> 16) & 0xf; } -void alloc_intr_gate(unsigned int n, const void *addr); - static inline void init_idt_data(struct idt_data *data, unsigned int n, const void *addr) { diff --git a/arch/x86/include/asm/disabled-features.h b/arch/x86/include/asm/disabled-features.h index 88fcf0845..c492bdc97 100644 --- a/arch/x86/include/asm/disabled-features.h +++ b/arch/x86/include/asm/disabled-features.h @@ -44,32 +44,32 @@ # define DISABLE_LA57 (1<<(X86_FEATURE_LA57 & 31)) #endif -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION # define DISABLE_PTI 0 #else # define DISABLE_PTI (1 << (X86_FEATURE_PTI & 31)) #endif -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE # define DISABLE_RETPOLINE 0 #else # define DISABLE_RETPOLINE ((1 << (X86_FEATURE_RETPOLINE & 31)) | \ (1 << (X86_FEATURE_RETPOLINE_LFENCE & 31))) #endif -#ifdef CONFIG_RETHUNK +#ifdef CONFIG_MITIGATION_RETHUNK # define DISABLE_RETHUNK 0 #else # define DISABLE_RETHUNK (1 << (X86_FEATURE_RETHUNK & 31)) #endif -#ifdef CONFIG_CPU_UNRET_ENTRY +#ifdef CONFIG_MITIGATION_UNRET_ENTRY # define DISABLE_UNRET 0 #else # define DISABLE_UNRET (1 << (X86_FEATURE_UNRET & 31)) #endif -#ifdef CONFIG_CALL_DEPTH_TRACKING +#ifdef CONFIG_MITIGATION_CALL_DEPTH_TRACKING # define DISABLE_CALL_DEPTH_TRACKING 0 #else # define DISABLE_CALL_DEPTH_TRACKING (1 << (X86_FEATURE_CALL_DEPTH & 31)) @@ -117,6 +117,18 @@ #define DISABLE_IBT (1 << (X86_FEATURE_IBT & 31)) #endif +#ifdef CONFIG_X86_FRED +# define DISABLE_FRED 0 +#else +# define DISABLE_FRED (1 << (X86_FEATURE_FRED & 31)) +#endif + +#ifdef CONFIG_KVM_AMD_SEV +#define DISABLE_SEV_SNP 0 +#else +#define DISABLE_SEV_SNP (1 << (X86_FEATURE_SEV_SNP & 31)) +#endif + /* * Make sure to add features to the correct mask */ @@ -133,7 +145,7 @@ #define DISABLED_MASK10 0 #define DISABLED_MASK11 (DISABLE_RETPOLINE|DISABLE_RETHUNK|DISABLE_UNRET| \ DISABLE_CALL_DEPTH_TRACKING|DISABLE_USER_SHSTK) -#define DISABLED_MASK12 (DISABLE_LAM) +#define DISABLED_MASK12 (DISABLE_FRED|DISABLE_LAM) #define DISABLED_MASK13 0 #define DISABLED_MASK14 0 #define DISABLED_MASK15 0 @@ -141,7 +153,7 @@ DISABLE_ENQCMD) #define DISABLED_MASK17 0 #define DISABLED_MASK18 (DISABLE_IBT) -#define DISABLED_MASK19 0 +#define DISABLED_MASK19 (DISABLE_SEV_SNP) #define DISABLED_MASK20 0 #define DISABLED_MASK21 0 #define DISABLED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 22) diff --git a/arch/x86/include/asm/e820/api.h b/arch/x86/include/asm/e820/api.h index e8f58ddd0..2e74a7f0e 100644 --- a/arch/x86/include/asm/e820/api.h +++ b/arch/x86/include/asm/e820/api.h @@ -17,6 +17,7 @@ extern bool e820__mapped_all(u64 start, u64 end, enum e820_type type); extern void e820__range_add (u64 start, u64 size, enum e820_type type); extern u64 e820__range_update(u64 start, u64 size, enum e820_type old_type, enum e820_type new_type); extern u64 e820__range_remove(u64 start, u64 size, enum e820_type old_type, bool check_type); +extern u64 e820__range_update_table(struct e820_table *t, u64 start, u64 size, enum e820_type old_type, enum e820_type new_type); extern void e820__print_table(char *who); extern int e820__update_table(struct e820_table *table); diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index c4555b269..1dc600fa3 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -143,15 +143,6 @@ extern void efi_free_boot_services(void); void arch_efi_call_virt_setup(void); void arch_efi_call_virt_teardown(void); -/* kexec external ABI */ -struct efi_setup_data { - u64 fw_vendor; - u64 __unused; - u64 tables; - u64 smbios; - u64 reserved[8]; -}; - extern u64 efi_setup; #ifdef CONFIG_EFI @@ -418,8 +409,9 @@ extern int __init efi_memmap_split_count(efi_memory_desc_t *md, extern void __init efi_memmap_insert(struct efi_memory_map *old_memmap, void *buf, struct efi_mem_range *mem); -#define arch_ima_efi_boot_mode \ - ({ extern struct boot_params boot_params; boot_params.secure_boot; }) +extern enum efi_secureboot_mode __x86_ima_efi_boot_mode(void); + +#define arch_ima_efi_boot_mode __x86_ima_efi_boot_mode() #ifdef CONFIG_EFI_RUNTIME_MAP int efi_get_runtime_map_size(void); diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h index 1e16bd5ac..1fb83d477 100644 --- a/arch/x86/include/asm/elf.h +++ b/arch/x86/include/asm/elf.h @@ -392,5 +392,4 @@ struct va_alignment { } ____cacheline_aligned; extern struct va_alignment va_align; -extern unsigned long align_vdso_addr(unsigned long); #endif /* _ASM_X86_ELF_H */ diff --git a/arch/x86/include/asm/extable_fixup_types.h b/arch/x86/include/asm/extable_fixup_types.h index fe6312045..7acf0383b 100644 --- a/arch/x86/include/asm/extable_fixup_types.h +++ b/arch/x86/include/asm/extable_fixup_types.h @@ -64,6 +64,8 @@ #define EX_TYPE_UCOPY_LEN4 (EX_TYPE_UCOPY_LEN | EX_DATA_IMM(4)) #define EX_TYPE_UCOPY_LEN8 (EX_TYPE_UCOPY_LEN | EX_DATA_IMM(8)) -#define EX_TYPE_ZEROPAD 20 /* longword load with zeropad on fault */ +#define EX_TYPE_ZEROPAD 20 /* longword load with zeropad on fault */ + +#define EX_TYPE_ERETU 21 #endif diff --git a/arch/x86/include/asm/fpu/sched.h b/arch/x86/include/asm/fpu/sched.h index ca6e5e5f1..c485f1944 100644 --- a/arch/x86/include/asm/fpu/sched.h +++ b/arch/x86/include/asm/fpu/sched.h @@ -37,10 +37,12 @@ extern void fpu_flush_thread(void); * The FPU context is only stored/restored for a user task and * PF_KTHREAD is used to distinguish between kernel and user threads. */ -static inline void switch_fpu_prepare(struct fpu *old_fpu, int cpu) +static inline void switch_fpu_prepare(struct task_struct *old, int cpu) { if (cpu_feature_enabled(X86_FEATURE_FPU) && - !(current->flags & (PF_KTHREAD | PF_USER_WORKER))) { + !(old->flags & (PF_KTHREAD | PF_USER_WORKER))) { + struct fpu *old_fpu = &old->thread.fpu; + save_fpregs_to_fpstate(old_fpu); /* * The save operation preserved register state, so the @@ -60,10 +62,10 @@ static inline void switch_fpu_prepare(struct fpu *old_fpu, int cpu) * Delay loading of the complete FPU state until the return to userland. * PKRU is handled separately. */ -static inline void switch_fpu_finish(void) +static inline void switch_fpu_finish(struct task_struct *new) { if (cpu_feature_enabled(X86_FEATURE_FPU)) - set_thread_flag(TIF_NEED_FPU_LOAD); + set_tsk_thread_flag(new, TIF_NEED_FPU_LOAD); } #endif /* _ASM_X86_FPU_SCHED_H */ diff --git a/arch/x86/include/asm/fred.h b/arch/x86/include/asm/fred.h new file mode 100644 index 000000000..e86c7ba32 --- /dev/null +++ b/arch/x86/include/asm/fred.h @@ -0,0 +1,97 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Macros for Flexible Return and Event Delivery (FRED) + */ + +#ifndef ASM_X86_FRED_H +#define ASM_X86_FRED_H + +#include <linux/const.h> + +#include <asm/asm.h> +#include <asm/trapnr.h> + +/* + * FRED event return instruction opcodes for ERET{S,U}; supported in + * binutils >= 2.41. + */ +#define ERETS _ASM_BYTES(0xf2,0x0f,0x01,0xca) +#define ERETU _ASM_BYTES(0xf3,0x0f,0x01,0xca) + +/* + * RSP is aligned to a 64-byte boundary before used to push a new stack frame + */ +#define FRED_STACK_FRAME_RSP_MASK _AT(unsigned long, (~0x3f)) + +/* + * Used for the return address for call emulation during code patching, + * and measured in 64-byte cache lines. + */ +#define FRED_CONFIG_REDZONE_AMOUNT 1 +#define FRED_CONFIG_REDZONE (_AT(unsigned long, FRED_CONFIG_REDZONE_AMOUNT) << 6) +#define FRED_CONFIG_INT_STKLVL(l) (_AT(unsigned long, l) << 9) +#define FRED_CONFIG_ENTRYPOINT(p) _AT(unsigned long, (p)) + +#ifndef __ASSEMBLY__ + +#ifdef CONFIG_X86_FRED +#include <linux/kernel.h> + +#include <asm/ptrace.h> + +struct fred_info { + /* Event data: CR2, DR6, ... */ + unsigned long edata; + unsigned long resv; +}; + +/* Full format of the FRED stack frame */ +struct fred_frame { + struct pt_regs regs; + struct fred_info info; +}; + +static __always_inline struct fred_info *fred_info(struct pt_regs *regs) +{ + return &container_of(regs, struct fred_frame, regs)->info; +} + +static __always_inline unsigned long fred_event_data(struct pt_regs *regs) +{ + return fred_info(regs)->edata; +} + +void asm_fred_entrypoint_user(void); +void asm_fred_entrypoint_kernel(void); +void asm_fred_entry_from_kvm(struct fred_ss); + +__visible void fred_entry_from_user(struct pt_regs *regs); +__visible void fred_entry_from_kernel(struct pt_regs *regs); +__visible void __fred_entry_from_kvm(struct pt_regs *regs); + +/* Can be called from noinstr code, thus __always_inline */ +static __always_inline void fred_entry_from_kvm(unsigned int type, unsigned int vector) +{ + struct fred_ss ss = { + .ss =__KERNEL_DS, + .type = type, + .vector = vector, + .nmi = type == EVENT_TYPE_NMI, + .lm = 1, + }; + + asm_fred_entry_from_kvm(ss); +} + +void cpu_init_fred_exceptions(void); +void fred_complete_exception_setup(void); + +#else /* CONFIG_X86_FRED */ +static __always_inline unsigned long fred_event_data(struct pt_regs *regs) { return 0; } +static inline void cpu_init_fred_exceptions(void) { } +static inline void fred_complete_exception_setup(void) { } +static __always_inline void fred_entry_from_kvm(unsigned int type, unsigned int vector) { } +#endif /* CONFIG_X86_FRED */ +#endif /* !__ASSEMBLY__ */ + +#endif /* ASM_X86_FRED_H */ diff --git a/arch/x86/include/asm/fsgsbase.h b/arch/x86/include/asm/fsgsbase.h index 35cff5f2b..9e7e8ca8e 100644 --- a/arch/x86/include/asm/fsgsbase.h +++ b/arch/x86/include/asm/fsgsbase.h @@ -6,7 +6,7 @@ #ifdef CONFIG_X86_64 -#include <asm/msr-index.h> +#include <asm/msr.h> /* * Read/write a task's FSBASE or GSBASE. This returns the value that diff --git a/arch/x86/include/asm/hardirq.h b/arch/x86/include/asm/hardirq.h index 66837b8c6..fbc7722b8 100644 --- a/arch/x86/include/asm/hardirq.h +++ b/arch/x86/include/asm/hardirq.h @@ -15,7 +15,7 @@ typedef struct { unsigned int irq_spurious_count; unsigned int icr_read_retry_count; #endif -#ifdef CONFIG_HAVE_KVM +#if IS_ENABLED(CONFIG_KVM) unsigned int kvm_posted_intr_ipis; unsigned int kvm_posted_intr_wakeup_ipis; unsigned int kvm_posted_intr_nested_ipis; diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h index b02c3cd3c..edebf1020 100644 --- a/arch/x86/include/asm/hw_irq.h +++ b/arch/x86/include/asm/hw_irq.h @@ -16,8 +16,6 @@ #include <asm/irq_vectors.h> -#define IRQ_MATRIX_BITS NR_VECTORS - #ifndef __ASSEMBLY__ #include <linux/percpu.h> diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h index 2ff26f53c..3787d2681 100644 --- a/arch/x86/include/asm/hyperv-tlfs.h +++ b/arch/x86/include/asm/hyperv-tlfs.h @@ -182,7 +182,7 @@ enum hv_isolation_type { #define HV_X64_MSR_HYPERCALL 0x40000001 /* MSR used to provide vcpu index */ -#define HV_REGISTER_VP_INDEX 0x40000002 +#define HV_X64_MSR_VP_INDEX 0x40000002 /* MSR used to reset the guest OS. */ #define HV_X64_MSR_RESET 0x40000003 @@ -191,10 +191,10 @@ enum hv_isolation_type { #define HV_X64_MSR_VP_RUNTIME 0x40000010 /* MSR used to read the per-partition time reference counter */ -#define HV_REGISTER_TIME_REF_COUNT 0x40000020 +#define HV_X64_MSR_TIME_REF_COUNT 0x40000020 /* A partition's reference time stamp counter (TSC) page */ -#define HV_REGISTER_REFERENCE_TSC 0x40000021 +#define HV_X64_MSR_REFERENCE_TSC 0x40000021 /* MSR used to retrieve the TSC frequency */ #define HV_X64_MSR_TSC_FREQUENCY 0x40000022 @@ -209,61 +209,61 @@ enum hv_isolation_type { #define HV_X64_MSR_VP_ASSIST_PAGE 0x40000073 /* Define synthetic interrupt controller model specific registers. */ -#define HV_REGISTER_SCONTROL 0x40000080 -#define HV_REGISTER_SVERSION 0x40000081 -#define HV_REGISTER_SIEFP 0x40000082 -#define HV_REGISTER_SIMP 0x40000083 -#define HV_REGISTER_EOM 0x40000084 -#define HV_REGISTER_SINT0 0x40000090 -#define HV_REGISTER_SINT1 0x40000091 -#define HV_REGISTER_SINT2 0x40000092 -#define HV_REGISTER_SINT3 0x40000093 -#define HV_REGISTER_SINT4 0x40000094 -#define HV_REGISTER_SINT5 0x40000095 -#define HV_REGISTER_SINT6 0x40000096 -#define HV_REGISTER_SINT7 0x40000097 -#define HV_REGISTER_SINT8 0x40000098 -#define HV_REGISTER_SINT9 0x40000099 -#define HV_REGISTER_SINT10 0x4000009A -#define HV_REGISTER_SINT11 0x4000009B -#define HV_REGISTER_SINT12 0x4000009C -#define HV_REGISTER_SINT13 0x4000009D -#define HV_REGISTER_SINT14 0x4000009E -#define HV_REGISTER_SINT15 0x4000009F +#define HV_X64_MSR_SCONTROL 0x40000080 +#define HV_X64_MSR_SVERSION 0x40000081 +#define HV_X64_MSR_SIEFP 0x40000082 +#define HV_X64_MSR_SIMP 0x40000083 +#define HV_X64_MSR_EOM 0x40000084 +#define HV_X64_MSR_SINT0 0x40000090 +#define HV_X64_MSR_SINT1 0x40000091 +#define HV_X64_MSR_SINT2 0x40000092 +#define HV_X64_MSR_SINT3 0x40000093 +#define HV_X64_MSR_SINT4 0x40000094 +#define HV_X64_MSR_SINT5 0x40000095 +#define HV_X64_MSR_SINT6 0x40000096 +#define HV_X64_MSR_SINT7 0x40000097 +#define HV_X64_MSR_SINT8 0x40000098 +#define HV_X64_MSR_SINT9 0x40000099 +#define HV_X64_MSR_SINT10 0x4000009A +#define HV_X64_MSR_SINT11 0x4000009B +#define HV_X64_MSR_SINT12 0x4000009C +#define HV_X64_MSR_SINT13 0x4000009D +#define HV_X64_MSR_SINT14 0x4000009E +#define HV_X64_MSR_SINT15 0x4000009F /* * Define synthetic interrupt controller model specific registers for * nested hypervisor. */ -#define HV_REGISTER_NESTED_SCONTROL 0x40001080 -#define HV_REGISTER_NESTED_SVERSION 0x40001081 -#define HV_REGISTER_NESTED_SIEFP 0x40001082 -#define HV_REGISTER_NESTED_SIMP 0x40001083 -#define HV_REGISTER_NESTED_EOM 0x40001084 -#define HV_REGISTER_NESTED_SINT0 0x40001090 +#define HV_X64_MSR_NESTED_SCONTROL 0x40001080 +#define HV_X64_MSR_NESTED_SVERSION 0x40001081 +#define HV_X64_MSR_NESTED_SIEFP 0x40001082 +#define HV_X64_MSR_NESTED_SIMP 0x40001083 +#define HV_X64_MSR_NESTED_EOM 0x40001084 +#define HV_X64_MSR_NESTED_SINT0 0x40001090 /* * Synthetic Timer MSRs. Four timers per vcpu. */ -#define HV_REGISTER_STIMER0_CONFIG 0x400000B0 -#define HV_REGISTER_STIMER0_COUNT 0x400000B1 -#define HV_REGISTER_STIMER1_CONFIG 0x400000B2 -#define HV_REGISTER_STIMER1_COUNT 0x400000B3 -#define HV_REGISTER_STIMER2_CONFIG 0x400000B4 -#define HV_REGISTER_STIMER2_COUNT 0x400000B5 -#define HV_REGISTER_STIMER3_CONFIG 0x400000B6 -#define HV_REGISTER_STIMER3_COUNT 0x400000B7 +#define HV_X64_MSR_STIMER0_CONFIG 0x400000B0 +#define HV_X64_MSR_STIMER0_COUNT 0x400000B1 +#define HV_X64_MSR_STIMER1_CONFIG 0x400000B2 +#define HV_X64_MSR_STIMER1_COUNT 0x400000B3 +#define HV_X64_MSR_STIMER2_CONFIG 0x400000B4 +#define HV_X64_MSR_STIMER2_COUNT 0x400000B5 +#define HV_X64_MSR_STIMER3_CONFIG 0x400000B6 +#define HV_X64_MSR_STIMER3_COUNT 0x400000B7 /* Hyper-V guest idle MSR */ #define HV_X64_MSR_GUEST_IDLE 0x400000F0 /* Hyper-V guest crash notification MSR's */ -#define HV_REGISTER_CRASH_P0 0x40000100 -#define HV_REGISTER_CRASH_P1 0x40000101 -#define HV_REGISTER_CRASH_P2 0x40000102 -#define HV_REGISTER_CRASH_P3 0x40000103 -#define HV_REGISTER_CRASH_P4 0x40000104 -#define HV_REGISTER_CRASH_CTL 0x40000105 +#define HV_X64_MSR_CRASH_P0 0x40000100 +#define HV_X64_MSR_CRASH_P1 0x40000101 +#define HV_X64_MSR_CRASH_P2 0x40000102 +#define HV_X64_MSR_CRASH_P3 0x40000103 +#define HV_X64_MSR_CRASH_P4 0x40000104 +#define HV_X64_MSR_CRASH_CTL 0x40000105 /* TSC emulation after migration */ #define HV_X64_MSR_REENLIGHTENMENT_CONTROL 0x40000106 @@ -276,31 +276,38 @@ enum hv_isolation_type { /* HV_X64_MSR_TSC_INVARIANT_CONTROL bits */ #define HV_EXPOSE_INVARIANT_TSC BIT_ULL(0) -/* Register name aliases for temporary compatibility */ -#define HV_X64_MSR_STIMER0_COUNT HV_REGISTER_STIMER0_COUNT -#define HV_X64_MSR_STIMER0_CONFIG HV_REGISTER_STIMER0_CONFIG -#define HV_X64_MSR_STIMER1_COUNT HV_REGISTER_STIMER1_COUNT -#define HV_X64_MSR_STIMER1_CONFIG HV_REGISTER_STIMER1_CONFIG -#define HV_X64_MSR_STIMER2_COUNT HV_REGISTER_STIMER2_COUNT -#define HV_X64_MSR_STIMER2_CONFIG HV_REGISTER_STIMER2_CONFIG -#define HV_X64_MSR_STIMER3_COUNT HV_REGISTER_STIMER3_COUNT -#define HV_X64_MSR_STIMER3_CONFIG HV_REGISTER_STIMER3_CONFIG -#define HV_X64_MSR_SCONTROL HV_REGISTER_SCONTROL -#define HV_X64_MSR_SVERSION HV_REGISTER_SVERSION -#define HV_X64_MSR_SIMP HV_REGISTER_SIMP -#define HV_X64_MSR_SIEFP HV_REGISTER_SIEFP -#define HV_X64_MSR_VP_INDEX HV_REGISTER_VP_INDEX -#define HV_X64_MSR_EOM HV_REGISTER_EOM -#define HV_X64_MSR_SINT0 HV_REGISTER_SINT0 -#define HV_X64_MSR_SINT15 HV_REGISTER_SINT15 -#define HV_X64_MSR_CRASH_P0 HV_REGISTER_CRASH_P0 -#define HV_X64_MSR_CRASH_P1 HV_REGISTER_CRASH_P1 -#define HV_X64_MSR_CRASH_P2 HV_REGISTER_CRASH_P2 -#define HV_X64_MSR_CRASH_P3 HV_REGISTER_CRASH_P3 -#define HV_X64_MSR_CRASH_P4 HV_REGISTER_CRASH_P4 -#define HV_X64_MSR_CRASH_CTL HV_REGISTER_CRASH_CTL -#define HV_X64_MSR_TIME_REF_COUNT HV_REGISTER_TIME_REF_COUNT -#define HV_X64_MSR_REFERENCE_TSC HV_REGISTER_REFERENCE_TSC +/* + * To support arch-generic code calling hv_set/get_register: + * - On x86, HV_MSR_ indicates an MSR accessed via rdmsrl/wrmsrl + * - On ARM, HV_MSR_ indicates a VP register accessed via hypercall + */ +#define HV_MSR_CRASH_P0 (HV_X64_MSR_CRASH_P0) +#define HV_MSR_CRASH_P1 (HV_X64_MSR_CRASH_P1) +#define HV_MSR_CRASH_P2 (HV_X64_MSR_CRASH_P2) +#define HV_MSR_CRASH_P3 (HV_X64_MSR_CRASH_P3) +#define HV_MSR_CRASH_P4 (HV_X64_MSR_CRASH_P4) +#define HV_MSR_CRASH_CTL (HV_X64_MSR_CRASH_CTL) + +#define HV_MSR_VP_INDEX (HV_X64_MSR_VP_INDEX) +#define HV_MSR_TIME_REF_COUNT (HV_X64_MSR_TIME_REF_COUNT) +#define HV_MSR_REFERENCE_TSC (HV_X64_MSR_REFERENCE_TSC) + +#define HV_MSR_SINT0 (HV_X64_MSR_SINT0) +#define HV_MSR_SVERSION (HV_X64_MSR_SVERSION) +#define HV_MSR_SCONTROL (HV_X64_MSR_SCONTROL) +#define HV_MSR_SIEFP (HV_X64_MSR_SIEFP) +#define HV_MSR_SIMP (HV_X64_MSR_SIMP) +#define HV_MSR_EOM (HV_X64_MSR_EOM) + +#define HV_MSR_NESTED_SCONTROL (HV_X64_MSR_NESTED_SCONTROL) +#define HV_MSR_NESTED_SVERSION (HV_X64_MSR_NESTED_SVERSION) +#define HV_MSR_NESTED_SIEFP (HV_X64_MSR_NESTED_SIEFP) +#define HV_MSR_NESTED_SIMP (HV_X64_MSR_NESTED_SIMP) +#define HV_MSR_NESTED_EOM (HV_X64_MSR_NESTED_EOM) +#define HV_MSR_NESTED_SINT0 (HV_X64_MSR_NESTED_SINT0) + +#define HV_MSR_STIMER0_CONFIG (HV_X64_MSR_STIMER0_CONFIG) +#define HV_MSR_STIMER0_COUNT (HV_X64_MSR_STIMER0_COUNT) /* * Registers are only accessible via HVCALL_GET_VP_REGISTERS hvcall and diff --git a/arch/x86/include/asm/ia32.h b/arch/x86/include/asm/ia32.h index c7ef6ea2f..4212c00c9 100644 --- a/arch/x86/include/asm/ia32.h +++ b/arch/x86/include/asm/ia32.h @@ -69,7 +69,7 @@ extern void ia32_pick_mmap_layout(struct mm_struct *mm); extern bool __ia32_enabled; -static inline bool ia32_enabled(void) +static __always_inline bool ia32_enabled(void) { return __ia32_enabled; } @@ -81,7 +81,7 @@ static inline void ia32_disable(void) #else /* !CONFIG_IA32_EMULATION */ -static inline bool ia32_enabled(void) +static __always_inline bool ia32_enabled(void) { return IS_ENABLED(CONFIG_X86_32); } diff --git a/arch/x86/include/asm/idtentry.h b/arch/x86/include/asm/idtentry.h index 13639e57e..749c7411d 100644 --- a/arch/x86/include/asm/idtentry.h +++ b/arch/x86/include/asm/idtentry.h @@ -13,15 +13,18 @@ #include <asm/irq_stack.h> +typedef void (*idtentry_t)(struct pt_regs *regs); + /** * DECLARE_IDTENTRY - Declare functions for simple IDT entry points * No error code pushed by hardware * @vector: Vector number (ignored for C) * @func: Function name of the entry point * - * Declares three functions: + * Declares four functions: * - The ASM entry point: asm_##func * - The XEN PV trap entry point: xen_##func (maybe unused) + * - The C handler called from the FRED event dispatcher (maybe unused) * - The C handler called from the ASM entry point * * Note: This is the C variant of DECLARE_IDTENTRY(). As the name says it @@ -31,6 +34,7 @@ #define DECLARE_IDTENTRY(vector, func) \ asmlinkage void asm_##func(void); \ asmlinkage void xen_asm_##func(void); \ + void fred_##func(struct pt_regs *regs); \ __visible void func(struct pt_regs *regs) /** @@ -138,6 +142,17 @@ static __always_inline void __##func(struct pt_regs *regs, \ __visible noinstr void func(struct pt_regs *regs) /** + * DEFINE_FREDENTRY_RAW - Emit code for raw FRED entry points + * @func: Function name of the entry point + * + * @func is called from the FRED event dispatcher with interrupts disabled. + * + * See @DEFINE_IDTENTRY_RAW for further details. + */ +#define DEFINE_FREDENTRY_RAW(func) \ +noinstr void fred_##func(struct pt_regs *regs) + +/** * DECLARE_IDTENTRY_RAW_ERRORCODE - Declare functions for raw IDT entry points * Error code pushed by hardware * @vector: Vector number (ignored for C) @@ -233,17 +248,27 @@ static noinline void __##func(struct pt_regs *regs, u32 vector) #define DEFINE_IDTENTRY_SYSVEC(func) \ static void __##func(struct pt_regs *regs); \ \ +static __always_inline void instr_##func(struct pt_regs *regs) \ +{ \ + kvm_set_cpu_l1tf_flush_l1d(); \ + run_sysvec_on_irqstack_cond(__##func, regs); \ +} \ + \ __visible noinstr void func(struct pt_regs *regs) \ { \ irqentry_state_t state = irqentry_enter(regs); \ \ instrumentation_begin(); \ - kvm_set_cpu_l1tf_flush_l1d(); \ - run_sysvec_on_irqstack_cond(__##func, regs); \ + instr_##func (regs); \ instrumentation_end(); \ irqentry_exit(regs, state); \ } \ \ +void fred_##func(struct pt_regs *regs) \ +{ \ + instr_##func (regs); \ +} \ + \ static noinline void __##func(struct pt_regs *regs) /** @@ -260,19 +285,29 @@ static noinline void __##func(struct pt_regs *regs) #define DEFINE_IDTENTRY_SYSVEC_SIMPLE(func) \ static __always_inline void __##func(struct pt_regs *regs); \ \ -__visible noinstr void func(struct pt_regs *regs) \ +static __always_inline void instr_##func(struct pt_regs *regs) \ { \ - irqentry_state_t state = irqentry_enter(regs); \ - \ - instrumentation_begin(); \ __irq_enter_raw(); \ kvm_set_cpu_l1tf_flush_l1d(); \ __##func (regs); \ __irq_exit_raw(); \ +} \ + \ +__visible noinstr void func(struct pt_regs *regs) \ +{ \ + irqentry_state_t state = irqentry_enter(regs); \ + \ + instrumentation_begin(); \ + instr_##func (regs); \ instrumentation_end(); \ irqentry_exit(regs, state); \ } \ \ +void fred_##func(struct pt_regs *regs) \ +{ \ + instr_##func (regs); \ +} \ + \ static __always_inline void __##func(struct pt_regs *regs) /** @@ -410,17 +445,35 @@ __visible noinstr void func(struct pt_regs *regs, \ /* C-Code mapping */ #define DECLARE_IDTENTRY_NMI DECLARE_IDTENTRY_RAW #define DEFINE_IDTENTRY_NMI DEFINE_IDTENTRY_RAW +#define DEFINE_FREDENTRY_NMI DEFINE_FREDENTRY_RAW #ifdef CONFIG_X86_64 #define DECLARE_IDTENTRY_MCE DECLARE_IDTENTRY_IST #define DEFINE_IDTENTRY_MCE DEFINE_IDTENTRY_IST #define DEFINE_IDTENTRY_MCE_USER DEFINE_IDTENTRY_NOIST +#define DEFINE_FREDENTRY_MCE DEFINE_FREDENTRY_RAW #define DECLARE_IDTENTRY_DEBUG DECLARE_IDTENTRY_IST #define DEFINE_IDTENTRY_DEBUG DEFINE_IDTENTRY_IST #define DEFINE_IDTENTRY_DEBUG_USER DEFINE_IDTENTRY_NOIST +#define DEFINE_FREDENTRY_DEBUG DEFINE_FREDENTRY_RAW +#endif + +void idt_install_sysvec(unsigned int n, const void *function); + +#ifdef CONFIG_X86_FRED +void fred_install_sysvec(unsigned int vector, const idtentry_t function); +#else +static inline void fred_install_sysvec(unsigned int vector, const idtentry_t function) { } #endif +#define sysvec_install(vector, function) { \ + if (cpu_feature_enabled(X86_FEATURE_FRED)) \ + fred_install_sysvec(vector, function); \ + else \ + idt_install_sysvec(vector, asm_##function); \ +} + #else /* !__ASSEMBLY__ */ /* @@ -447,7 +500,7 @@ __visible noinstr void func(struct pt_regs *regs, \ /* System vector entries */ #define DECLARE_IDTENTRY_SYSVEC(vector, func) \ - idtentry_sysvec vector func + DECLARE_IDTENTRY(vector, func) #ifdef CONFIG_X86_64 # define DECLARE_IDTENTRY_MCE(vector, func) \ @@ -655,36 +708,53 @@ DECLARE_IDTENTRY(RESCHEDULE_VECTOR, sysvec_reschedule_ipi); DECLARE_IDTENTRY_SYSVEC(REBOOT_VECTOR, sysvec_reboot); DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_SINGLE_VECTOR, sysvec_call_function_single); DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_VECTOR, sysvec_call_function); +#else +# define fred_sysvec_reschedule_ipi NULL +# define fred_sysvec_reboot NULL +# define fred_sysvec_call_function_single NULL +# define fred_sysvec_call_function NULL #endif #ifdef CONFIG_X86_LOCAL_APIC # ifdef CONFIG_X86_MCE_THRESHOLD DECLARE_IDTENTRY_SYSVEC(THRESHOLD_APIC_VECTOR, sysvec_threshold); +# else +# define fred_sysvec_threshold NULL # endif # ifdef CONFIG_X86_MCE_AMD DECLARE_IDTENTRY_SYSVEC(DEFERRED_ERROR_VECTOR, sysvec_deferred_error); +# else +# define fred_sysvec_deferred_error NULL # endif # ifdef CONFIG_X86_THERMAL_VECTOR DECLARE_IDTENTRY_SYSVEC(THERMAL_APIC_VECTOR, sysvec_thermal); +# else +# define fred_sysvec_thermal NULL # endif # ifdef CONFIG_IRQ_WORK DECLARE_IDTENTRY_SYSVEC(IRQ_WORK_VECTOR, sysvec_irq_work); +# else +# define fred_sysvec_irq_work NULL # endif #endif -#ifdef CONFIG_HAVE_KVM +#if IS_ENABLED(CONFIG_KVM) DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_VECTOR, sysvec_kvm_posted_intr_ipi); DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_WAKEUP_VECTOR, sysvec_kvm_posted_intr_wakeup_ipi); DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_NESTED_VECTOR, sysvec_kvm_posted_intr_nested_ipi); +#else +# define fred_sysvec_kvm_posted_intr_ipi NULL +# define fred_sysvec_kvm_posted_intr_wakeup_ipi NULL +# define fred_sysvec_kvm_posted_intr_nested_ipi NULL #endif #if IS_ENABLED(CONFIG_HYPERV) DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_hyperv_callback); DECLARE_IDTENTRY_SYSVEC(HYPERV_REENLIGHTENMENT_VECTOR, sysvec_hyperv_reenlightenment); -DECLARE_IDTENTRY_SYSVEC(HYPERV_STIMER0_VECTOR, sysvec_hyperv_stimer0); +DECLARE_IDTENTRY_SYSVEC(HYPERV_STIMER0_VECTOR, sysvec_hyperv_stimer0); #endif #if IS_ENABLED(CONFIG_ACRN_GUEST) diff --git a/arch/x86/include/asm/intel-family.h b/arch/x86/include/asm/intel-family.h index b65e9c46b..d0941f4c2 100644 --- a/arch/x86/include/asm/intel-family.h +++ b/arch/x86/include/asm/intel-family.h @@ -127,6 +127,7 @@ #define INTEL_FAM6_ARROWLAKE_H 0xC5 #define INTEL_FAM6_ARROWLAKE 0xC6 +#define INTEL_FAM6_ARROWLAKE_U 0xB5 #define INTEL_FAM6_LUNARLAKE_M 0xBD diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 51c782600..0d806513c 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -140,7 +140,6 @@ extern void mask_ioapic_entries(void); extern int restore_ioapic_entries(void); extern void setup_ioapic_ids_from_mpc(void); -extern void setup_ioapic_ids_from_mpc_nocheck(void); extern int mp_find_ioapic(u32 gsi); extern int mp_find_ioapic_pin(int ioapic, u32 gsi); diff --git a/arch/x86/include/asm/iommu.h b/arch/x86/include/asm/iommu.h index 2fd52b65d..3be2451e7 100644 --- a/arch/x86/include/asm/iommu.h +++ b/arch/x86/include/asm/iommu.h @@ -10,6 +10,7 @@ extern int force_iommu, no_iommu; extern int iommu_detected; extern int iommu_merge; extern int panic_on_overflow; +extern bool amd_iommu_snp_en; #ifdef CONFIG_SWIOTLB extern bool x86_swiotlb_enable; diff --git a/arch/x86/include/asm/irq.h b/arch/x86/include/asm/irq.h index 836c170d3..194dfff84 100644 --- a/arch/x86/include/asm/irq.h +++ b/arch/x86/include/asm/irq.h @@ -29,7 +29,7 @@ struct irq_desc; extern void fixup_irqs(void); -#ifdef CONFIG_HAVE_KVM +#if IS_ENABLED(CONFIG_KVM) extern void kvm_set_posted_intr_wakeup_handler(void (*handler)(void)); #endif diff --git a/arch/x86/include/asm/irq_vectors.h b/arch/x86/include/asm/irq_vectors.h index 3a19904c2..d18bfb238 100644 --- a/arch/x86/include/asm/irq_vectors.h +++ b/arch/x86/include/asm/irq_vectors.h @@ -84,11 +84,9 @@ #define HYPERVISOR_CALLBACK_VECTOR 0xf3 /* Vector for KVM to deliver posted interrupt IPI */ -#ifdef CONFIG_HAVE_KVM #define POSTED_INTR_VECTOR 0xf2 #define POSTED_INTR_WAKEUP_VECTOR 0xf1 #define POSTED_INTR_NESTED_VECTOR 0xf0 -#endif #define MANAGED_IRQ_SHUTDOWN_VECTOR 0xef diff --git a/arch/x86/include/asm/kexec.h b/arch/x86/include/asm/kexec.h index c9f6a6c5d..91ca9a9ee 100644 --- a/arch/x86/include/asm/kexec.h +++ b/arch/x86/include/asm/kexec.h @@ -25,7 +25,6 @@ #include <asm/page.h> #include <asm/ptrace.h> -#include <asm/bootparam.h> struct kimage; diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h index 378ed944b..110d7f29c 100644 --- a/arch/x86/include/asm/kvm-x86-ops.h +++ b/arch/x86/include/asm/kvm-x86-ops.h @@ -103,7 +103,6 @@ KVM_X86_OP(write_tsc_multiplier) KVM_X86_OP(get_exit_info) KVM_X86_OP(check_intercept) KVM_X86_OP(handle_exit_irqoff) -KVM_X86_OP(request_immediate_exit) KVM_X86_OP(sched_in) KVM_X86_OP_OPTIONAL(update_cpu_dirty_logging) KVM_X86_OP_OPTIONAL(vcpu_blocking) @@ -138,6 +137,7 @@ KVM_X86_OP(complete_emulated_msr) KVM_X86_OP(vcpu_deliver_sipi_vector) KVM_X86_OP_OPTIONAL_RET0(vcpu_get_apicv_inhibit_reasons); KVM_X86_OP_OPTIONAL(get_untagged_addr) +KVM_X86_OP_OPTIONAL(alloc_apic_backing_page) #undef KVM_X86_OP #undef KVM_X86_OP_OPTIONAL diff --git a/arch/x86/include/asm/kvm-x86-pmu-ops.h b/arch/x86/include/asm/kvm-x86-pmu-ops.h index 058bc6363..f852b13ae 100644 --- a/arch/x86/include/asm/kvm-x86-pmu-ops.h +++ b/arch/x86/include/asm/kvm-x86-pmu-ops.h @@ -12,11 +12,9 @@ BUILD_BUG_ON(1) * a NULL definition, for example if "static_call_cond()" will be used * at the call sites. */ -KVM_X86_PMU_OP(hw_event_available) -KVM_X86_PMU_OP(pmc_idx_to_pmc) KVM_X86_PMU_OP(rdpmc_ecx_to_pmc) KVM_X86_PMU_OP(msr_idx_to_pmc) -KVM_X86_PMU_OP(is_valid_rdpmc_ecx) +KVM_X86_PMU_OP_OPTIONAL(check_rdpmc_early) KVM_X86_PMU_OP(is_valid_msr) KVM_X86_PMU_OP(get_msr) KVM_X86_PMU_OP(set_msr) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index b7a539ea2..6efd1497b 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -536,6 +536,7 @@ struct kvm_pmc { #define KVM_PMC_MAX_FIXED 3 #define MSR_ARCH_PERFMON_FIXED_CTR_MAX (MSR_ARCH_PERFMON_FIXED_CTR0 + KVM_PMC_MAX_FIXED - 1) #define KVM_AMD_PMC_MAX_GENERIC 6 + struct kvm_pmu { u8 version; unsigned nr_arch_gp_counters; @@ -1469,6 +1470,15 @@ struct kvm_arch { */ bool shadow_root_allocated; +#ifdef CONFIG_KVM_EXTERNAL_WRITE_TRACKING + /* + * If set, the VM has (or had) an external write tracking user, and + * thus all write tracking metadata has been allocated, even if KVM + * itself isn't using write tracking. + */ + bool external_write_tracking_enabled; +#endif + #if IS_ENABLED(CONFIG_HYPERV) hpa_t hv_root_tdp; spinlock_t hv_root_tdp_lock; @@ -1666,7 +1676,8 @@ struct kvm_x86_ops { void (*flush_tlb_guest)(struct kvm_vcpu *vcpu); int (*vcpu_pre_run)(struct kvm_vcpu *vcpu); - enum exit_fastpath_completion (*vcpu_run)(struct kvm_vcpu *vcpu); + enum exit_fastpath_completion (*vcpu_run)(struct kvm_vcpu *vcpu, + bool force_immediate_exit); int (*handle_exit)(struct kvm_vcpu *vcpu, enum exit_fastpath_completion exit_fastpath); int (*skip_emulated_instruction)(struct kvm_vcpu *vcpu); @@ -1734,8 +1745,6 @@ struct kvm_x86_ops { struct x86_exception *exception); void (*handle_exit_irqoff)(struct kvm_vcpu *vcpu); - void (*request_immediate_exit)(struct kvm_vcpu *vcpu); - void (*sched_in)(struct kvm_vcpu *vcpu, int cpu); /* @@ -1797,6 +1806,7 @@ struct kvm_x86_ops { unsigned long (*vcpu_get_apicv_inhibit_reasons)(struct kvm_vcpu *vcpu); gva_t (*get_untagged_addr)(struct kvm_vcpu *vcpu, gva_t gva, unsigned int flags); + void *(*alloc_apic_backing_page)(struct kvm_vcpu *vcpu); }; struct kvm_x86_nested_ops { @@ -1882,8 +1892,16 @@ static inline int kvm_arch_flush_remote_tlbs_range(struct kvm *kvm, gfn_t gfn, } #endif /* CONFIG_HYPERV */ +enum kvm_intr_type { + /* Values are arbitrary, but must be non-zero. */ + KVM_HANDLING_IRQ = 1, + KVM_HANDLING_NMI, +}; + +/* Enable perf NMI and timer modes to work, and minimise false positives. */ #define kvm_arch_pmi_in_guest(vcpu) \ - ((vcpu) && (vcpu)->arch.handling_intr_from_guest) + ((vcpu) && (vcpu)->arch.handling_intr_from_guest && \ + (!!in_nmi() == ((vcpu)->arch.handling_intr_from_guest == KVM_HANDLING_NMI))) void __init kvm_mmu_x86_module_init(void); int kvm_mmu_vendor_module_init(void); @@ -2048,7 +2066,7 @@ int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3); int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4); int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8); int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val); -void kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val); +unsigned long kvm_get_dr(struct kvm_vcpu *vcpu, int dr); unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu); void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw); int kvm_emulate_xsetbv(struct kvm_vcpu *vcpu); @@ -2241,7 +2259,6 @@ extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn); int kvm_skip_emulated_instruction(struct kvm_vcpu *vcpu); int kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err); -void __kvm_request_immediate_exit(struct kvm_vcpu *vcpu); void __user *__x86_set_memory_region(struct kvm *kvm, int id, gpa_t gpa, u32 size); diff --git a/arch/x86/include/asm/kvmclock.h b/arch/x86/include/asm/kvmclock.h index 511b35069..f163176d6 100644 --- a/arch/x86/include/asm/kvmclock.h +++ b/arch/x86/include/asm/kvmclock.h @@ -4,8 +4,6 @@ #include <linux/percpu.h> -extern struct clocksource kvm_clock; - DECLARE_PER_CPU(struct pvclock_vsyscall_time_info *, hv_clock_per_cpu); static __always_inline struct pvclock_vcpu_time_info *this_cpu_pvti(void) diff --git a/arch/x86/include/asm/linkage.h b/arch/x86/include/asm/linkage.h index 571fe4d2d..dc31b13b8 100644 --- a/arch/x86/include/asm/linkage.h +++ b/arch/x86/include/asm/linkage.h @@ -40,27 +40,27 @@ #ifdef __ASSEMBLY__ -#if defined(CONFIG_RETHUNK) && !defined(__DISABLE_EXPORTS) && !defined(BUILD_VDSO) +#if defined(CONFIG_MITIGATION_RETHUNK) && !defined(__DISABLE_EXPORTS) && !defined(BUILD_VDSO) #define RET jmp __x86_return_thunk -#else /* CONFIG_RETPOLINE */ -#ifdef CONFIG_SLS +#else /* CONFIG_MITIGATION_RETPOLINE */ +#ifdef CONFIG_MITIGATION_SLS #define RET ret; int3 #else #define RET ret #endif -#endif /* CONFIG_RETPOLINE */ +#endif /* CONFIG_MITIGATION_RETPOLINE */ #else /* __ASSEMBLY__ */ -#if defined(CONFIG_RETHUNK) && !defined(__DISABLE_EXPORTS) && !defined(BUILD_VDSO) +#if defined(CONFIG_MITIGATION_RETHUNK) && !defined(__DISABLE_EXPORTS) && !defined(BUILD_VDSO) #define ASM_RET "jmp __x86_return_thunk\n\t" -#else /* CONFIG_RETPOLINE */ -#ifdef CONFIG_SLS +#else /* CONFIG_MITIGATION_RETPOLINE */ +#ifdef CONFIG_MITIGATION_SLS #define ASM_RET "ret; int3\n\t" #else #define ASM_RET "ret\n\t" #endif -#endif /* CONFIG_RETPOLINE */ +#endif /* CONFIG_MITIGATION_RETPOLINE */ #endif /* __ASSEMBLY__ */ diff --git a/arch/x86/include/asm/local.h b/arch/x86/include/asm/local.h index 73dba8b94..59aa966dc 100644 --- a/arch/x86/include/asm/local.h +++ b/arch/x86/include/asm/local.h @@ -131,8 +131,20 @@ static inline bool local_try_cmpxchg(local_t *l, long *old, long new) (typeof(l->a.counter) *) old, new); } -/* Always has a lock prefix */ -#define local_xchg(l, n) (xchg(&((l)->a.counter), (n))) +/* + * Implement local_xchg using CMPXCHG instruction without the LOCK prefix. + * XCHG is expensive due to the implied LOCK prefix. The processor + * cannot prefetch cachelines if XCHG is used. + */ +static __always_inline long +local_xchg(local_t *l, long n) +{ + long c = local_read(l); + + do { } while (!local_try_cmpxchg(l, &c, n)); + + return c; +} /** * local_add_unless - add unless the number is already a given value diff --git a/arch/x86/include/asm/mmu.h b/arch/x86/include/asm/mmu.h index 0da5c227f..ce4677b8b 100644 --- a/arch/x86/include/asm/mmu.h +++ b/arch/x86/include/asm/mmu.h @@ -75,7 +75,7 @@ typedef struct { .lock = __MUTEX_INITIALIZER(mm.context.lock), \ } -void leave_mm(int cpu); +void leave_mm(void); #define leave_mm leave_mm #endif /* _ASM_X86_MMU_H */ diff --git a/arch/x86/include/asm/mpspec.h b/arch/x86/include/asm/mpspec.h index 4b0f98a8d..c72c7ff78 100644 --- a/arch/x86/include/asm/mpspec.h +++ b/arch/x86/include/asm/mpspec.h @@ -2,6 +2,7 @@ #ifndef _ASM_X86_MPSPEC_H #define _ASM_X86_MPSPEC_H +#include <linux/types.h> #include <asm/mpspec_def.h> #include <asm/x86_init.h> @@ -46,70 +47,31 @@ extern int smp_found_config; # define smp_found_config 0 #endif -static inline void get_smp_config(void) -{ - x86_init.mpparse.get_smp_config(0); -} - -static inline void early_get_smp_config(void) -{ - x86_init.mpparse.get_smp_config(1); -} - -static inline void find_smp_config(void) -{ - x86_init.mpparse.find_smp_config(); -} - #ifdef CONFIG_X86_MPPARSE extern void e820__memblock_alloc_reserved_mpc_new(void); extern int enable_update_mptable; -extern void default_find_smp_config(void); -extern void default_get_smp_config(unsigned int early); +extern void mpparse_find_mptable(void); +extern void mpparse_parse_early_smp_config(void); +extern void mpparse_parse_smp_config(void); #else static inline void e820__memblock_alloc_reserved_mpc_new(void) { } -#define enable_update_mptable 0 -#define default_find_smp_config x86_init_noop -#define default_get_smp_config x86_init_uint_noop +#define enable_update_mptable 0 +#define mpparse_find_mptable x86_init_noop +#define mpparse_parse_early_smp_config x86_init_noop +#define mpparse_parse_smp_config x86_init_noop #endif -int generic_processor_info(int apicid); +extern DECLARE_BITMAP(phys_cpu_present_map, MAX_LOCAL_APIC); -#define PHYSID_ARRAY_SIZE BITS_TO_LONGS(MAX_LOCAL_APIC) - -struct physid_mask { - unsigned long mask[PHYSID_ARRAY_SIZE]; -}; - -typedef struct physid_mask physid_mask_t; - -#define physid_set(physid, map) set_bit(physid, (map).mask) -#define physid_isset(physid, map) test_bit(physid, (map).mask) - -#define physids_or(dst, src1, src2) \ - bitmap_or((dst).mask, (src1).mask, (src2).mask, MAX_LOCAL_APIC) - -#define physids_clear(map) \ - bitmap_zero((map).mask, MAX_LOCAL_APIC) - -#define physids_empty(map) \ - bitmap_empty((map).mask, MAX_LOCAL_APIC) - -static inline void physids_promote(unsigned long physids, physid_mask_t *map) +static inline void reset_phys_cpu_present_map(u32 apicid) { - physids_clear(*map); - map->mask[0] = physids; + bitmap_zero(phys_cpu_present_map, MAX_LOCAL_APIC); + set_bit(apicid, phys_cpu_present_map); } -static inline void physid_set_mask_of_physid(int physid, physid_mask_t *map) +static inline void copy_phys_cpu_present_map(unsigned long *dst) { - physids_clear(*map); - physid_set(physid, *map); + bitmap_copy(dst, phys_cpu_present_map, MAX_LOCAL_APIC); } -#define PHYSID_MASK_ALL { {[0 ... PHYSID_ARRAY_SIZE-1] = ~0UL} } -#define PHYSID_MASK_NONE { {[0 ... PHYSID_ARRAY_SIZE-1] = 0UL} } - -extern physid_mask_t phys_cpu_present_map; - #endif /* _ASM_X86_MPSPEC_H */ diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index ce4ce8720..390c4d139 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x86/include/asm/mshyperv.h @@ -293,24 +293,24 @@ static inline void hv_ivm_msr_write(u64 msr, u64 value) {} static inline void hv_ivm_msr_read(u64 msr, u64 *value) {} #endif -static inline bool hv_is_synic_reg(unsigned int reg) +static inline bool hv_is_synic_msr(unsigned int reg) { - return (reg >= HV_REGISTER_SCONTROL) && - (reg <= HV_REGISTER_SINT15); + return (reg >= HV_X64_MSR_SCONTROL) && + (reg <= HV_X64_MSR_SINT15); } -static inline bool hv_is_sint_reg(unsigned int reg) +static inline bool hv_is_sint_msr(unsigned int reg) { - return (reg >= HV_REGISTER_SINT0) && - (reg <= HV_REGISTER_SINT15); + return (reg >= HV_X64_MSR_SINT0) && + (reg <= HV_X64_MSR_SINT15); } -u64 hv_get_register(unsigned int reg); -void hv_set_register(unsigned int reg, u64 value); -u64 hv_get_non_nested_register(unsigned int reg); -void hv_set_non_nested_register(unsigned int reg, u64 value); +u64 hv_get_msr(unsigned int reg); +void hv_set_msr(unsigned int reg, u64 value); +u64 hv_get_non_nested_msr(unsigned int reg); +void hv_set_non_nested_msr(unsigned int reg, u64 value); -static __always_inline u64 hv_raw_get_register(unsigned int reg) +static __always_inline u64 hv_raw_get_msr(unsigned int reg) { return __rdmsr(reg); } @@ -331,10 +331,10 @@ static inline int hyperv_flush_guest_mapping_range(u64 as, { return -1; } -static inline void hv_set_register(unsigned int reg, u64 value) { } -static inline u64 hv_get_register(unsigned int reg) { return 0; } -static inline void hv_set_non_nested_register(unsigned int reg, u64 value) { } -static inline u64 hv_get_non_nested_register(unsigned int reg) { return 0; } +static inline void hv_set_msr(unsigned int reg, u64 value) { } +static inline u64 hv_get_msr(unsigned int reg) { return 0; } +static inline void hv_set_non_nested_msr(unsigned int reg, u64 value) { } +static inline u64 hv_get_non_nested_msr(unsigned int reg) { return 0; } #endif /* CONFIG_HYPERV */ diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h index d65f8ce6b..e72c2b872 100644 --- a/arch/x86/include/asm/msr-index.h +++ b/arch/x86/include/asm/msr-index.h @@ -36,8 +36,19 @@ #define EFER_FFXSR (1<<_EFER_FFXSR) #define EFER_AUTOIBRS (1<<_EFER_AUTOIBRS) -/* Intel MSRs. Some also available on other CPUs */ +/* FRED MSRs */ +#define MSR_IA32_FRED_RSP0 0x1cc /* Level 0 stack pointer */ +#define MSR_IA32_FRED_RSP1 0x1cd /* Level 1 stack pointer */ +#define MSR_IA32_FRED_RSP2 0x1ce /* Level 2 stack pointer */ +#define MSR_IA32_FRED_RSP3 0x1cf /* Level 3 stack pointer */ +#define MSR_IA32_FRED_STKLVLS 0x1d0 /* Exception stack levels */ +#define MSR_IA32_FRED_SSP0 MSR_IA32_PL0_SSP /* Level 0 shadow stack pointer */ +#define MSR_IA32_FRED_SSP1 0x1d1 /* Level 1 shadow stack pointer */ +#define MSR_IA32_FRED_SSP2 0x1d2 /* Level 2 shadow stack pointer */ +#define MSR_IA32_FRED_SSP3 0x1d3 /* Level 3 shadow stack pointer */ +#define MSR_IA32_FRED_CONFIG 0x1d4 /* Entrypoint and interrupt stack level */ +/* Intel MSRs. Some also available on other CPUs */ #define MSR_TEST_CTRL 0x00000033 #define MSR_TEST_CTRL_SPLIT_LOCK_DETECT_BIT 29 #define MSR_TEST_CTRL_SPLIT_LOCK_DETECT BIT(MSR_TEST_CTRL_SPLIT_LOCK_DETECT_BIT) @@ -609,34 +620,47 @@ #define MSR_AMD64_SEV_ES_GHCB 0xc0010130 #define MSR_AMD64_SEV 0xc0010131 #define MSR_AMD64_SEV_ENABLED_BIT 0 -#define MSR_AMD64_SEV_ES_ENABLED_BIT 1 -#define MSR_AMD64_SEV_SNP_ENABLED_BIT 2 #define MSR_AMD64_SEV_ENABLED BIT_ULL(MSR_AMD64_SEV_ENABLED_BIT) +#define MSR_AMD64_SEV_ES_ENABLED_BIT 1 #define MSR_AMD64_SEV_ES_ENABLED BIT_ULL(MSR_AMD64_SEV_ES_ENABLED_BIT) +#define MSR_AMD64_SEV_SNP_ENABLED_BIT 2 #define MSR_AMD64_SEV_SNP_ENABLED BIT_ULL(MSR_AMD64_SEV_SNP_ENABLED_BIT) - -/* SNP feature bits enabled by the hypervisor */ -#define MSR_AMD64_SNP_VTOM BIT_ULL(3) -#define MSR_AMD64_SNP_REFLECT_VC BIT_ULL(4) -#define MSR_AMD64_SNP_RESTRICTED_INJ BIT_ULL(5) -#define MSR_AMD64_SNP_ALT_INJ BIT_ULL(6) -#define MSR_AMD64_SNP_DEBUG_SWAP BIT_ULL(7) -#define MSR_AMD64_SNP_PREVENT_HOST_IBS BIT_ULL(8) -#define MSR_AMD64_SNP_BTB_ISOLATION BIT_ULL(9) -#define MSR_AMD64_SNP_VMPL_SSS BIT_ULL(10) -#define MSR_AMD64_SNP_SECURE_TSC BIT_ULL(11) -#define MSR_AMD64_SNP_VMGEXIT_PARAM BIT_ULL(12) -#define MSR_AMD64_SNP_IBS_VIRT BIT_ULL(14) -#define MSR_AMD64_SNP_VMSA_REG_PROTECTION BIT_ULL(16) -#define MSR_AMD64_SNP_SMT_PROTECTION BIT_ULL(17) - -/* SNP feature bits reserved for future use. */ -#define MSR_AMD64_SNP_RESERVED_BIT13 BIT_ULL(13) -#define MSR_AMD64_SNP_RESERVED_BIT15 BIT_ULL(15) -#define MSR_AMD64_SNP_RESERVED_MASK GENMASK_ULL(63, 18) +#define MSR_AMD64_SNP_VTOM_BIT 3 +#define MSR_AMD64_SNP_VTOM BIT_ULL(MSR_AMD64_SNP_VTOM_BIT) +#define MSR_AMD64_SNP_REFLECT_VC_BIT 4 +#define MSR_AMD64_SNP_REFLECT_VC BIT_ULL(MSR_AMD64_SNP_REFLECT_VC_BIT) +#define MSR_AMD64_SNP_RESTRICTED_INJ_BIT 5 +#define MSR_AMD64_SNP_RESTRICTED_INJ BIT_ULL(MSR_AMD64_SNP_RESTRICTED_INJ_BIT) +#define MSR_AMD64_SNP_ALT_INJ_BIT 6 +#define MSR_AMD64_SNP_ALT_INJ BIT_ULL(MSR_AMD64_SNP_ALT_INJ_BIT) +#define MSR_AMD64_SNP_DEBUG_SWAP_BIT 7 +#define MSR_AMD64_SNP_DEBUG_SWAP BIT_ULL(MSR_AMD64_SNP_DEBUG_SWAP_BIT) +#define MSR_AMD64_SNP_PREVENT_HOST_IBS_BIT 8 +#define MSR_AMD64_SNP_PREVENT_HOST_IBS BIT_ULL(MSR_AMD64_SNP_PREVENT_HOST_IBS_BIT) +#define MSR_AMD64_SNP_BTB_ISOLATION_BIT 9 +#define MSR_AMD64_SNP_BTB_ISOLATION BIT_ULL(MSR_AMD64_SNP_BTB_ISOLATION_BIT) +#define MSR_AMD64_SNP_VMPL_SSS_BIT 10 +#define MSR_AMD64_SNP_VMPL_SSS BIT_ULL(MSR_AMD64_SNP_VMPL_SSS_BIT) +#define MSR_AMD64_SNP_SECURE_TSC_BIT 11 +#define MSR_AMD64_SNP_SECURE_TSC BIT_ULL(MSR_AMD64_SNP_SECURE_TSC_BIT) +#define MSR_AMD64_SNP_VMGEXIT_PARAM_BIT 12 +#define MSR_AMD64_SNP_VMGEXIT_PARAM BIT_ULL(MSR_AMD64_SNP_VMGEXIT_PARAM_BIT) +#define MSR_AMD64_SNP_RESERVED_BIT13 BIT_ULL(13) +#define MSR_AMD64_SNP_IBS_VIRT_BIT 14 +#define MSR_AMD64_SNP_IBS_VIRT BIT_ULL(MSR_AMD64_SNP_IBS_VIRT_BIT) +#define MSR_AMD64_SNP_RESERVED_BIT15 BIT_ULL(15) +#define MSR_AMD64_SNP_VMSA_REG_PROT_BIT 16 +#define MSR_AMD64_SNP_VMSA_REG_PROT BIT_ULL(MSR_AMD64_SNP_VMSA_REG_PROT_BIT) +#define MSR_AMD64_SNP_SMT_PROT_BIT 17 +#define MSR_AMD64_SNP_SMT_PROT BIT_ULL(MSR_AMD64_SNP_SMT_PROT_BIT) +#define MSR_AMD64_SNP_RESV_BIT 18 +#define MSR_AMD64_SNP_RESERVED_MASK GENMASK_ULL(63, MSR_AMD64_SNP_RESV_BIT) #define MSR_AMD64_VIRT_SPEC_CTRL 0xc001011f +#define MSR_AMD64_RMP_BASE 0xc0010132 +#define MSR_AMD64_RMP_END 0xc0010133 + /* AMD Collaborative Processor Performance Control MSRs */ #define MSR_AMD_CPPC_CAP1 0xc00102b0 #define MSR_AMD_CPPC_ENABLE 0xc00102b1 @@ -723,8 +747,15 @@ #define MSR_K8_TOP_MEM1 0xc001001a #define MSR_K8_TOP_MEM2 0xc001001d #define MSR_AMD64_SYSCFG 0xc0010010 -#define MSR_AMD64_SYSCFG_MEM_ENCRYPT_BIT 23 +#define MSR_AMD64_SYSCFG_MEM_ENCRYPT_BIT 23 #define MSR_AMD64_SYSCFG_MEM_ENCRYPT BIT_ULL(MSR_AMD64_SYSCFG_MEM_ENCRYPT_BIT) +#define MSR_AMD64_SYSCFG_SNP_EN_BIT 24 +#define MSR_AMD64_SYSCFG_SNP_EN BIT_ULL(MSR_AMD64_SYSCFG_SNP_EN_BIT) +#define MSR_AMD64_SYSCFG_SNP_VMPL_EN_BIT 25 +#define MSR_AMD64_SYSCFG_SNP_VMPL_EN BIT_ULL(MSR_AMD64_SYSCFG_SNP_VMPL_EN_BIT) +#define MSR_AMD64_SYSCFG_MFDM_BIT 19 +#define MSR_AMD64_SYSCFG_MFDM BIT_ULL(MSR_AMD64_SYSCFG_MFDM_BIT) + #define MSR_K8_INT_PENDING_MSG 0xc0010055 /* C1E active bits in int pending message */ #define K8_INTP_C1E_ACTIVE_MASK 0x18000000 diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h index 65ec1965c..d642037f9 100644 --- a/arch/x86/include/asm/msr.h +++ b/arch/x86/include/asm/msr.h @@ -12,11 +12,13 @@ #include <uapi/asm/msr.h> #include <asm/shared/msr.h> +#include <linux/percpu.h> + struct msr_info { - u32 msr_no; - struct msr reg; - struct msr *msrs; - int err; + u32 msr_no; + struct msr reg; + struct msr __percpu *msrs; + int err; }; struct msr_regs_info { @@ -97,6 +99,19 @@ static __always_inline void __wrmsr(unsigned int msr, u32 low, u32 high) : : "c" (msr), "a"(low), "d" (high) : "memory"); } +/* + * WRMSRNS behaves exactly like WRMSR with the only difference being + * that it is not a serializing instruction by default. + */ +static __always_inline void __wrmsrns(u32 msr, u32 low, u32 high) +{ + /* Instruction opcode for WRMSRNS; supported in binutils >= 2.40. */ + asm volatile("1: .byte 0x0f,0x01,0xc6\n" + "2:\n" + _ASM_EXTABLE_TYPE(1b, 2b, EX_TYPE_WRMSR) + : : "c" (msr), "a"(low), "d" (high)); +} + #define native_rdmsr(msr, val1, val2) \ do { \ u64 __val = __rdmsr((msr)); \ @@ -297,6 +312,11 @@ do { \ #endif /* !CONFIG_PARAVIRT_XXL */ +static __always_inline void wrmsrns(u32 msr, u64 val) +{ + __wrmsrns(msr, val, val >> 32); +} + /* * 64-bit version of wrmsr_safe(): */ @@ -305,8 +325,8 @@ static inline int wrmsrl_safe(u32 msr, u64 val) return wrmsr_safe(msr, (u32)val, (u32)(val >> 32)); } -struct msr *msrs_alloc(void); -void msrs_free(struct msr *msrs); +struct msr __percpu *msrs_alloc(void); +void msrs_free(struct msr __percpu *msrs); int msr_set_bit(u32 msr, u8 bit); int msr_clear_bit(u32 msr, u8 bit); @@ -315,8 +335,8 @@ int rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h); int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h); int rdmsrl_on_cpu(unsigned int cpu, u32 msr_no, u64 *q); int wrmsrl_on_cpu(unsigned int cpu, u32 msr_no, u64 q); -void rdmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr *msrs); -void wrmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr *msrs); +void rdmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr __percpu *msrs); +void wrmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr __percpu *msrs); int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h); int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h); int rdmsrl_safe_on_cpu(unsigned int cpu, u32 msr_no, u64 *q); @@ -345,14 +365,14 @@ static inline int wrmsrl_on_cpu(unsigned int cpu, u32 msr_no, u64 q) return 0; } static inline void rdmsr_on_cpus(const struct cpumask *m, u32 msr_no, - struct msr *msrs) + struct msr __percpu *msrs) { - rdmsr_on_cpu(0, msr_no, &(msrs[0].l), &(msrs[0].h)); + rdmsr_on_cpu(0, msr_no, raw_cpu_ptr(&msrs->l), raw_cpu_ptr(&msrs->h)); } static inline void wrmsr_on_cpus(const struct cpumask *m, u32 msr_no, - struct msr *msrs) + struct msr __percpu *msrs) { - wrmsr_on_cpu(0, msr_no, msrs[0].l, msrs[0].h); + wrmsr_on_cpu(0, msr_no, raw_cpu_read(msrs->l), raw_cpu_read(msrs->h)); } static inline int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h) diff --git a/arch/x86/include/asm/nmi.h b/arch/x86/include/asm/nmi.h index 5c5f1e56c..41a0ebb69 100644 --- a/arch/x86/include/asm/nmi.h +++ b/arch/x86/include/asm/nmi.h @@ -14,9 +14,6 @@ extern void release_perfctr_nmi(unsigned int); extern int reserve_evntsel_nmi(unsigned int); extern void release_evntsel_nmi(unsigned int); -struct ctl_table; -extern int proc_nmi_enabled(struct ctl_table *, int , - void __user *, size_t *, loff_t *); extern int unknown_nmi_panic; #endif /* CONFIG_X86_LOCAL_APIC */ diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h index 3ff081a74..ff5f1ecc7 100644 --- a/arch/x86/include/asm/nospec-branch.h +++ b/arch/x86/include/asm/nospec-branch.h @@ -59,13 +59,13 @@ #ifdef CONFIG_CALL_THUNKS_DEBUG # define CALL_THUNKS_DEBUG_INC_CALLS \ - incq %gs:__x86_call_count; + incq PER_CPU_VAR(__x86_call_count); # define CALL_THUNKS_DEBUG_INC_RETS \ - incq %gs:__x86_ret_count; + incq PER_CPU_VAR(__x86_ret_count); # define CALL_THUNKS_DEBUG_INC_STUFFS \ - incq %gs:__x86_stuffs_count; + incq PER_CPU_VAR(__x86_stuffs_count); # define CALL_THUNKS_DEBUG_INC_CTXSW \ - incq %gs:__x86_ctxsw_count; + incq PER_CPU_VAR(__x86_ctxsw_count); #else # define CALL_THUNKS_DEBUG_INC_CALLS # define CALL_THUNKS_DEBUG_INC_RETS @@ -73,16 +73,13 @@ # define CALL_THUNKS_DEBUG_INC_CTXSW #endif -#if defined(CONFIG_CALL_DEPTH_TRACKING) && !defined(COMPILE_OFFSETS) +#if defined(CONFIG_MITIGATION_CALL_DEPTH_TRACKING) && !defined(COMPILE_OFFSETS) #include <asm/asm-offsets.h> #define CREDIT_CALL_DEPTH \ movq $-1, PER_CPU_VAR(pcpu_hot + X86_call_depth); -#define ASM_CREDIT_CALL_DEPTH \ - movq $-1, PER_CPU_VAR(pcpu_hot + X86_call_depth); - #define RESET_CALL_DEPTH \ xor %eax, %eax; \ bts $63, %rax; \ @@ -95,20 +92,14 @@ CALL_THUNKS_DEBUG_INC_CALLS #define INCREMENT_CALL_DEPTH \ - sarq $5, %gs:pcpu_hot + X86_call_depth; \ - CALL_THUNKS_DEBUG_INC_CALLS - -#define ASM_INCREMENT_CALL_DEPTH \ sarq $5, PER_CPU_VAR(pcpu_hot + X86_call_depth); \ CALL_THUNKS_DEBUG_INC_CALLS #else #define CREDIT_CALL_DEPTH -#define ASM_CREDIT_CALL_DEPTH #define RESET_CALL_DEPTH -#define INCREMENT_CALL_DEPTH -#define ASM_INCREMENT_CALL_DEPTH #define RESET_CALL_DEPTH_FROM_CALL +#define INCREMENT_CALL_DEPTH #endif /* @@ -158,7 +149,7 @@ jnz 771b; \ /* barrier for jnz misprediction */ \ lfence; \ - ASM_CREDIT_CALL_DEPTH \ + CREDIT_CALL_DEPTH \ CALL_THUNKS_DEBUG_INC_CTXSW #else /* @@ -212,7 +203,7 @@ */ .macro VALIDATE_UNRET_END #if defined(CONFIG_NOINSTR_VALIDATION) && \ - (defined(CONFIG_CPU_UNRET_ENTRY) || defined(CONFIG_CPU_SRSO)) + (defined(CONFIG_MITIGATION_UNRET_ENTRY) || defined(CONFIG_MITIGATION_SRSO)) ANNOTATE_RETPOLINE_SAFE nop #endif @@ -241,7 +232,7 @@ * instruction irrespective of kCFI. */ .macro JMP_NOSPEC reg:req -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE __CS_PREFIX \reg jmp __x86_indirect_thunk_\reg #else @@ -251,7 +242,7 @@ .endm .macro CALL_NOSPEC reg:req -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE __CS_PREFIX \reg call __x86_indirect_thunk_\reg #else @@ -280,7 +271,7 @@ * kernel can support nested alternatives with arbitrary nesting. */ .macro CALL_UNTRAIN_RET -#if defined(CONFIG_CPU_UNRET_ENTRY) || defined(CONFIG_CPU_SRSO) +#if defined(CONFIG_MITIGATION_UNRET_ENTRY) || defined(CONFIG_MITIGATION_SRSO) ALTERNATIVE_2 "", "call entry_untrain_ret", X86_FEATURE_UNRET, \ "call srso_alias_untrain_ret", X86_FEATURE_SRSO_ALIAS #endif @@ -298,7 +289,7 @@ * where we have a stack but before any RET instruction. */ .macro __UNTRAIN_RET ibpb_feature, call_depth_insns -#if defined(CONFIG_RETHUNK) || defined(CONFIG_CPU_IBPB_ENTRY) +#if defined(CONFIG_MITIGATION_RETHUNK) || defined(CONFIG_MITIGATION_IBPB_ENTRY) VALIDATE_UNRET_END CALL_UNTRAIN_RET ALTERNATIVE_2 "", \ @@ -318,9 +309,9 @@ .macro CALL_DEPTH_ACCOUNT -#ifdef CONFIG_CALL_DEPTH_TRACKING +#ifdef CONFIG_MITIGATION_CALL_DEPTH_TRACKING ALTERNATIVE "", \ - __stringify(ASM_INCREMENT_CALL_DEPTH), X86_FEATURE_CALL_DEPTH + __stringify(INCREMENT_CALL_DEPTH), X86_FEATURE_CALL_DEPTH #endif .endm @@ -361,13 +352,13 @@ extern retpoline_thunk_t __x86_indirect_thunk_array[]; extern retpoline_thunk_t __x86_indirect_call_thunk_array[]; extern retpoline_thunk_t __x86_indirect_jump_thunk_array[]; -#ifdef CONFIG_RETHUNK +#ifdef CONFIG_MITIGATION_RETHUNK extern void __x86_return_thunk(void); #else static inline void __x86_return_thunk(void) {} #endif -#ifdef CONFIG_CPU_UNRET_ENTRY +#ifdef CONFIG_MITIGATION_UNRET_ENTRY extern void retbleed_return_thunk(void); #else static inline void retbleed_return_thunk(void) {} @@ -375,7 +366,7 @@ static inline void retbleed_return_thunk(void) {} extern void srso_alias_untrain_ret(void); -#ifdef CONFIG_CPU_SRSO +#ifdef CONFIG_MITIGATION_SRSO extern void srso_return_thunk(void); extern void srso_alias_return_thunk(void); #else @@ -396,7 +387,9 @@ extern void clear_bhb_loop(void); extern void (*x86_return_thunk)(void); -#ifdef CONFIG_CALL_DEPTH_TRACKING +extern void __warn_thunk(void); + +#ifdef CONFIG_MITIGATION_CALL_DEPTH_TRACKING extern void call_depth_return_thunk(void); #define CALL_DEPTH_ACCOUNT \ @@ -410,14 +403,14 @@ DECLARE_PER_CPU(u64, __x86_ret_count); DECLARE_PER_CPU(u64, __x86_stuffs_count); DECLARE_PER_CPU(u64, __x86_ctxsw_count); #endif -#else /* !CONFIG_CALL_DEPTH_TRACKING */ +#else /* !CONFIG_MITIGATION_CALL_DEPTH_TRACKING */ static inline void call_depth_return_thunk(void) {} #define CALL_DEPTH_ACCOUNT "" -#endif /* CONFIG_CALL_DEPTH_TRACKING */ +#endif /* CONFIG_MITIGATION_CALL_DEPTH_TRACKING */ -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE #define GEN(reg) \ extern retpoline_thunk_t __x86_indirect_thunk_ ## reg; @@ -438,7 +431,7 @@ static inline void call_depth_return_thunk(void) {} /* * Inline asm uses the %V modifier which is only in newer GCC - * which is ensured when CONFIG_RETPOLINE is defined. + * which is ensured when CONFIG_MITIGATION_RETPOLINE is defined. */ # define CALL_NOSPEC \ ALTERNATIVE_2( \ diff --git a/arch/x86/include/asm/page_types.h b/arch/x86/include/asm/page_types.h index 86bd4311d..9da9c8a2f 100644 --- a/arch/x86/include/asm/page_types.h +++ b/arch/x86/include/asm/page_types.h @@ -7,7 +7,7 @@ #include <linux/mem_encrypt.h> /* PAGE_SHIFT determines the page size */ -#define PAGE_SHIFT 12 +#define PAGE_SHIFT CONFIG_PAGE_SHIFT #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index b40c462b4..b3ab80a03 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -10,7 +10,6 @@ #include <linux/numa.h> #include <asm/io.h> #include <asm/memtype.h> -#include <asm/x86_init.h> struct pci_sysdata { int domain; /* PCI domain */ @@ -124,16 +123,4 @@ cpumask_of_pcibus(const struct pci_bus *bus) } #endif -struct pci_setup_rom { - struct setup_data data; - uint16_t vendor; - uint16_t devid; - uint64_t pcilen; - unsigned long segment; - unsigned long bus; - unsigned long device; - unsigned long function; - uint8_t romdata[]; -}; - #endif /* _ASM_X86_PCI_H */ diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h index 5e01883eb..b77bbb67e 100644 --- a/arch/x86/include/asm/percpu.h +++ b/arch/x86/include/asm/percpu.h @@ -4,17 +4,21 @@ #ifdef CONFIG_X86_64 #define __percpu_seg gs +#define __percpu_rel (%rip) #else #define __percpu_seg fs +#define __percpu_rel #endif #ifdef __ASSEMBLY__ #ifdef CONFIG_SMP -#define PER_CPU_VAR(var) %__percpu_seg:var -#else /* ! SMP */ -#define PER_CPU_VAR(var) var -#endif /* SMP */ +#define __percpu %__percpu_seg: +#else +#define __percpu +#endif + +#define PER_CPU_VAR(var) __percpu(var)__percpu_rel #ifdef CONFIG_X86_64_SMP #define INIT_PER_CPU_VAR(var) init_per_cpu__##var @@ -24,30 +28,84 @@ #else /* ...!ASSEMBLY */ +#include <linux/build_bug.h> #include <linux/stringify.h> #include <asm/asm.h> #ifdef CONFIG_SMP + +#ifdef CONFIG_CC_HAS_NAMED_AS + +#ifdef __CHECKER__ +#define __seg_gs __attribute__((address_space(__seg_gs))) +#define __seg_fs __attribute__((address_space(__seg_fs))) +#endif + +#ifdef CONFIG_X86_64 +#define __percpu_seg_override __seg_gs +#else +#define __percpu_seg_override __seg_fs +#endif + +#define __percpu_prefix "" + +#else /* CONFIG_CC_HAS_NAMED_AS */ + +#define __percpu_seg_override #define __percpu_prefix "%%"__stringify(__percpu_seg)":" + +#endif /* CONFIG_CC_HAS_NAMED_AS */ + +#define __force_percpu_prefix "%%"__stringify(__percpu_seg)":" #define __my_cpu_offset this_cpu_read(this_cpu_off) +#ifdef CONFIG_USE_X86_SEG_SUPPORT +/* + * Efficient implementation for cases in which the compiler supports + * named address spaces. Allows the compiler to perform additional + * optimizations that can save more instructions. + */ +#define arch_raw_cpu_ptr(ptr) \ +({ \ + unsigned long tcp_ptr__; \ + tcp_ptr__ = __raw_cpu_read(, this_cpu_off); \ + \ + tcp_ptr__ += (__force unsigned long)(ptr); \ + (typeof(*(ptr)) __kernel __force *)tcp_ptr__; \ +}) +#else /* CONFIG_USE_X86_SEG_SUPPORT */ /* * Compared to the generic __my_cpu_offset version, the following * saves one instruction and avoids clobbering a temp register. */ -#define arch_raw_cpu_ptr(ptr) \ -({ \ - unsigned long tcp_ptr__; \ - asm ("add " __percpu_arg(1) ", %0" \ - : "=r" (tcp_ptr__) \ - : "m" (this_cpu_off), "0" (ptr)); \ - (typeof(*(ptr)) __kernel __force *)tcp_ptr__; \ +#define arch_raw_cpu_ptr(ptr) \ +({ \ + unsigned long tcp_ptr__; \ + asm ("mov " __percpu_arg(1) ", %0" \ + : "=r" (tcp_ptr__) \ + : "m" (__my_cpu_var(this_cpu_off))); \ + \ + tcp_ptr__ += (unsigned long)(ptr); \ + (typeof(*(ptr)) __kernel __force *)tcp_ptr__; \ }) -#else +#endif /* CONFIG_USE_X86_SEG_SUPPORT */ + +#define PER_CPU_VAR(var) %__percpu_seg:(var)__percpu_rel + +#else /* CONFIG_SMP */ +#define __percpu_seg_override #define __percpu_prefix "" -#endif +#define __force_percpu_prefix "" + +#define PER_CPU_VAR(var) (var)__percpu_rel +#endif /* CONFIG_SMP */ + +#define __my_cpu_type(var) typeof(var) __percpu_seg_override +#define __my_cpu_ptr(ptr) (__my_cpu_type(*ptr)*)(__force uintptr_t)(ptr) +#define __my_cpu_var(var) (*__my_cpu_ptr(&(var))) #define __percpu_arg(x) __percpu_prefix "%" #x +#define __force_percpu_arg(x) __force_percpu_prefix "%" #x /* * Initialized pointers to per-cpu variables needed for the boot @@ -107,14 +165,14 @@ do { \ (void)pto_tmp__; \ } \ asm qual(__pcpu_op2_##size(op, "%[val]", __percpu_arg([var])) \ - : [var] "+m" (_var) \ + : [var] "+m" (__my_cpu_var(_var)) \ : [val] __pcpu_reg_imm_##size(pto_val__)); \ } while (0) #define percpu_unary_op(size, qual, op, _var) \ ({ \ asm qual (__pcpu_op1_##size(op, __percpu_arg([var])) \ - : [var] "+m" (_var)); \ + : [var] "+m" (__my_cpu_var(_var))); \ }) /* @@ -144,16 +202,16 @@ do { \ __pcpu_type_##size pfo_val__; \ asm qual (__pcpu_op2_##size(op, __percpu_arg([var]), "%[val]") \ : [val] __pcpu_reg_##size("=", pfo_val__) \ - : [var] "m" (_var)); \ + : [var] "m" (__my_cpu_var(_var))); \ (typeof(_var))(unsigned long) pfo_val__; \ }) #define percpu_stable_op(size, op, _var) \ ({ \ __pcpu_type_##size pfo_val__; \ - asm(__pcpu_op2_##size(op, __percpu_arg(P[var]), "%[val]") \ + asm(__pcpu_op2_##size(op, __force_percpu_arg(a[var]), "%[val]") \ : [val] __pcpu_reg_##size("=", pfo_val__) \ - : [var] "p" (&(_var))); \ + : [var] "i" (&(_var))); \ (typeof(_var))(unsigned long) pfo_val__; \ }) @@ -166,7 +224,7 @@ do { \ asm qual (__pcpu_op2_##size("xadd", "%[tmp]", \ __percpu_arg([var])) \ : [tmp] __pcpu_reg_##size("+", paro_tmp__), \ - [var] "+m" (_var) \ + [var] "+m" (__my_cpu_var(_var)) \ : : "memory"); \ (typeof(_var))(unsigned long) (paro_tmp__ + _val); \ }) @@ -187,7 +245,7 @@ do { \ __percpu_arg([var])) \ "\n\tjnz 1b" \ : [oval] "=&a" (pxo_old__), \ - [var] "+m" (_var) \ + [var] "+m" (__my_cpu_var(_var)) \ : [nval] __pcpu_reg_##size(, pxo_new__) \ : "memory"); \ (typeof(_var))(unsigned long) pxo_old__; \ @@ -204,7 +262,7 @@ do { \ asm qual (__pcpu_op2_##size("cmpxchg", "%[nval]", \ __percpu_arg([var])) \ : [oval] "+a" (pco_old__), \ - [var] "+m" (_var) \ + [var] "+m" (__my_cpu_var(_var)) \ : [nval] __pcpu_reg_##size(, pco_new__) \ : "memory"); \ (typeof(_var))(unsigned long) pco_old__; \ @@ -221,7 +279,7 @@ do { \ CC_SET(z) \ : CC_OUT(z) (success), \ [oval] "+a" (pco_old__), \ - [var] "+m" (_var) \ + [var] "+m" (__my_cpu_var(_var)) \ : [nval] __pcpu_reg_##size(, pco_new__) \ : "memory"); \ if (unlikely(!success)) \ @@ -244,7 +302,7 @@ do { \ \ asm qual (ALTERNATIVE("call this_cpu_cmpxchg8b_emu", \ "cmpxchg8b " __percpu_arg([var]), X86_FEATURE_CX8) \ - : [var] "+m" (_var), \ + : [var] "+m" (__my_cpu_var(_var)), \ "+a" (old__.low), \ "+d" (old__.high) \ : "b" (new__.low), \ @@ -276,7 +334,7 @@ do { \ "cmpxchg8b " __percpu_arg([var]), X86_FEATURE_CX8) \ CC_SET(z) \ : CC_OUT(z) (success), \ - [var] "+m" (_var), \ + [var] "+m" (__my_cpu_var(_var)), \ "+a" (old__.low), \ "+d" (old__.high) \ : "b" (new__.low), \ @@ -313,7 +371,7 @@ do { \ \ asm qual (ALTERNATIVE("call this_cpu_cmpxchg16b_emu", \ "cmpxchg16b " __percpu_arg([var]), X86_FEATURE_CX16) \ - : [var] "+m" (_var), \ + : [var] "+m" (__my_cpu_var(_var)), \ "+a" (old__.low), \ "+d" (old__.high) \ : "b" (new__.low), \ @@ -345,7 +403,7 @@ do { \ "cmpxchg16b " __percpu_arg([var]), X86_FEATURE_CX16) \ CC_SET(z) \ : CC_OUT(z) (success), \ - [var] "+m" (_var), \ + [var] "+m" (__my_cpu_var(_var)), \ "+a" (old__.low), \ "+d" (old__.high) \ : "b" (new__.low), \ @@ -366,9 +424,9 @@ do { \ * accessed while this_cpu_read_stable() allows the value to be cached. * this_cpu_read_stable() is more efficient and can be used if its value * is guaranteed to be valid across cpus. The current users include - * get_current() and get_thread_info() both of which are actually - * per-thread variables implemented as per-cpu variables and thus - * stable for the duration of the respective task. + * pcpu_hot.current_task and pcpu_hot.top_of_stack, both of which are + * actually per-thread variables implemented as per-CPU variables and + * thus stable for the duration of the respective task. */ #define this_cpu_read_stable_1(pcp) percpu_stable_op(1, "mov", pcp) #define this_cpu_read_stable_2(pcp) percpu_stable_op(2, "mov", pcp) @@ -376,13 +434,72 @@ do { \ #define this_cpu_read_stable_8(pcp) percpu_stable_op(8, "mov", pcp) #define this_cpu_read_stable(pcp) __pcpu_size_call_return(this_cpu_read_stable_, pcp) +#ifdef CONFIG_USE_X86_SEG_SUPPORT + +#define __raw_cpu_read(qual, pcp) \ +({ \ + *(qual __my_cpu_type(pcp) *)__my_cpu_ptr(&(pcp)); \ +}) + +#define __raw_cpu_write(qual, pcp, val) \ +do { \ + *(qual __my_cpu_type(pcp) *)__my_cpu_ptr(&(pcp)) = (val); \ +} while (0) + +#define raw_cpu_read_1(pcp) __raw_cpu_read(, pcp) +#define raw_cpu_read_2(pcp) __raw_cpu_read(, pcp) +#define raw_cpu_read_4(pcp) __raw_cpu_read(, pcp) +#define raw_cpu_write_1(pcp, val) __raw_cpu_write(, pcp, val) +#define raw_cpu_write_2(pcp, val) __raw_cpu_write(, pcp, val) +#define raw_cpu_write_4(pcp, val) __raw_cpu_write(, pcp, val) + +#define this_cpu_read_1(pcp) __raw_cpu_read(volatile, pcp) +#define this_cpu_read_2(pcp) __raw_cpu_read(volatile, pcp) +#define this_cpu_read_4(pcp) __raw_cpu_read(volatile, pcp) +#define this_cpu_write_1(pcp, val) __raw_cpu_write(volatile, pcp, val) +#define this_cpu_write_2(pcp, val) __raw_cpu_write(volatile, pcp, val) +#define this_cpu_write_4(pcp, val) __raw_cpu_write(volatile, pcp, val) + +#ifdef CONFIG_X86_64 +#define raw_cpu_read_8(pcp) __raw_cpu_read(, pcp) +#define raw_cpu_write_8(pcp, val) __raw_cpu_write(, pcp, val) + +#define this_cpu_read_8(pcp) __raw_cpu_read(volatile, pcp) +#define this_cpu_write_8(pcp, val) __raw_cpu_write(volatile, pcp, val) +#endif + +#define this_cpu_read_const(pcp) __raw_cpu_read(, pcp) +#else /* CONFIG_USE_X86_SEG_SUPPORT */ + #define raw_cpu_read_1(pcp) percpu_from_op(1, , "mov", pcp) #define raw_cpu_read_2(pcp) percpu_from_op(2, , "mov", pcp) #define raw_cpu_read_4(pcp) percpu_from_op(4, , "mov", pcp) - #define raw_cpu_write_1(pcp, val) percpu_to_op(1, , "mov", (pcp), val) #define raw_cpu_write_2(pcp, val) percpu_to_op(2, , "mov", (pcp), val) #define raw_cpu_write_4(pcp, val) percpu_to_op(4, , "mov", (pcp), val) + +#define this_cpu_read_1(pcp) percpu_from_op(1, volatile, "mov", pcp) +#define this_cpu_read_2(pcp) percpu_from_op(2, volatile, "mov", pcp) +#define this_cpu_read_4(pcp) percpu_from_op(4, volatile, "mov", pcp) +#define this_cpu_write_1(pcp, val) percpu_to_op(1, volatile, "mov", (pcp), val) +#define this_cpu_write_2(pcp, val) percpu_to_op(2, volatile, "mov", (pcp), val) +#define this_cpu_write_4(pcp, val) percpu_to_op(4, volatile, "mov", (pcp), val) + +#ifdef CONFIG_X86_64 +#define raw_cpu_read_8(pcp) percpu_from_op(8, , "mov", pcp) +#define raw_cpu_write_8(pcp, val) percpu_to_op(8, , "mov", (pcp), val) + +#define this_cpu_read_8(pcp) percpu_from_op(8, volatile, "mov", pcp) +#define this_cpu_write_8(pcp, val) percpu_to_op(8, volatile, "mov", (pcp), val) +#endif + +/* + * The generic per-cpu infrastrucutre is not suitable for + * reading const-qualified variables. + */ +#define this_cpu_read_const(pcp) ({ BUILD_BUG(); (typeof(pcp))0; }) +#endif /* CONFIG_USE_X86_SEG_SUPPORT */ + #define raw_cpu_add_1(pcp, val) percpu_add_op(1, , (pcp), val) #define raw_cpu_add_2(pcp, val) percpu_add_op(2, , (pcp), val) #define raw_cpu_add_4(pcp, val) percpu_add_op(4, , (pcp), val) @@ -408,12 +525,6 @@ do { \ #define raw_cpu_xchg_2(pcp, val) raw_percpu_xchg_op(pcp, val) #define raw_cpu_xchg_4(pcp, val) raw_percpu_xchg_op(pcp, val) -#define this_cpu_read_1(pcp) percpu_from_op(1, volatile, "mov", pcp) -#define this_cpu_read_2(pcp) percpu_from_op(2, volatile, "mov", pcp) -#define this_cpu_read_4(pcp) percpu_from_op(4, volatile, "mov", pcp) -#define this_cpu_write_1(pcp, val) percpu_to_op(1, volatile, "mov", (pcp), val) -#define this_cpu_write_2(pcp, val) percpu_to_op(2, volatile, "mov", (pcp), val) -#define this_cpu_write_4(pcp, val) percpu_to_op(4, volatile, "mov", (pcp), val) #define this_cpu_add_1(pcp, val) percpu_add_op(1, volatile, (pcp), val) #define this_cpu_add_2(pcp, val) percpu_add_op(2, volatile, (pcp), val) #define this_cpu_add_4(pcp, val) percpu_add_op(4, volatile, (pcp), val) @@ -452,8 +563,6 @@ do { \ * 32 bit must fall back to generic operations. */ #ifdef CONFIG_X86_64 -#define raw_cpu_read_8(pcp) percpu_from_op(8, , "mov", pcp) -#define raw_cpu_write_8(pcp, val) percpu_to_op(8, , "mov", (pcp), val) #define raw_cpu_add_8(pcp, val) percpu_add_op(8, , (pcp), val) #define raw_cpu_and_8(pcp, val) percpu_to_op(8, , "and", (pcp), val) #define raw_cpu_or_8(pcp, val) percpu_to_op(8, , "or", (pcp), val) @@ -462,8 +571,6 @@ do { \ #define raw_cpu_cmpxchg_8(pcp, oval, nval) percpu_cmpxchg_op(8, , pcp, oval, nval) #define raw_cpu_try_cmpxchg_8(pcp, ovalp, nval) percpu_try_cmpxchg_op(8, , pcp, ovalp, nval) -#define this_cpu_read_8(pcp) percpu_from_op(8, volatile, "mov", pcp) -#define this_cpu_write_8(pcp, val) percpu_to_op(8, volatile, "mov", (pcp), val) #define this_cpu_add_8(pcp, val) percpu_add_op(8, volatile, (pcp), val) #define this_cpu_and_8(pcp, val) percpu_to_op(8, volatile, "and", (pcp), val) #define this_cpu_or_8(pcp, val) percpu_to_op(8, volatile, "or", (pcp), val) @@ -494,7 +601,7 @@ static inline bool x86_this_cpu_variable_test_bit(int nr, asm volatile("btl "__percpu_arg(2)",%1" CC_SET(c) : CC_OUT(c) (oldbit) - : "m" (*(unsigned long __percpu *)addr), "Ir" (nr)); + : "m" (*__my_cpu_ptr((unsigned long __percpu *)(addr))), "Ir" (nr)); return oldbit; } diff --git a/arch/x86/include/asm/perf_event.h b/arch/x86/include/asm/perf_event.h index 3736b8a46..7f1e17250 100644 --- a/arch/x86/include/asm/perf_event.h +++ b/arch/x86/include/asm/perf_event.h @@ -555,6 +555,7 @@ struct x86_pmu_lbr { unsigned int from; unsigned int to; unsigned int info; + bool has_callstack; }; extern void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap); diff --git a/arch/x86/include/asm/perf_event_p4.h b/arch/x86/include/asm/perf_event_p4.h index 94de1a05a..d65e338b6 100644 --- a/arch/x86/include/asm/perf_event_p4.h +++ b/arch/x86/include/asm/perf_event_p4.h @@ -181,7 +181,7 @@ static inline u64 p4_clear_ht_bit(u64 config) static inline int p4_ht_active(void) { #ifdef CONFIG_SMP - return smp_num_siblings > 1; + return __max_threads_per_core > 1; #endif return 0; } @@ -189,7 +189,7 @@ static inline int p4_ht_active(void) static inline int p4_ht_thread(int cpu) { #ifdef CONFIG_SMP - if (smp_num_siblings == 2) + if (__max_threads_per_core == 2) return cpu != cpumask_first(this_cpu_cpumask_var_ptr(cpu_sibling_map)); #endif return 0; diff --git a/arch/x86/include/asm/pgalloc.h b/arch/x86/include/asm/pgalloc.h index c7ec5bb88..dcd836b59 100644 --- a/arch/x86/include/asm/pgalloc.h +++ b/arch/x86/include/asm/pgalloc.h @@ -34,7 +34,7 @@ static inline void paravirt_release_p4d(unsigned long pfn) {} */ extern gfp_t __userpte_alloc_gfp; -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION /* * Instead of one PGD, we acquire two PGDs. Being order-1, it is * both 8k in size and 8k-aligned. That lets us just flip bit 12 diff --git a/arch/x86/include/asm/pgtable-3level.h b/arch/x86/include/asm/pgtable-3level.h index 9e7c0b719..dabafba95 100644 --- a/arch/x86/include/asm/pgtable-3level.h +++ b/arch/x86/include/asm/pgtable-3level.h @@ -52,7 +52,7 @@ static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) static inline void native_set_pud(pud_t *pudp, pud_t pud) { -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION pud.p4d.pgd = pti_set_user_pgtbl(&pudp->p4d.pgd, pud.p4d.pgd); #endif pxx_xchg64(pud, pudp, native_pud_val(pud)); diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index 9d077bca6..315535ffb 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -31,7 +31,8 @@ struct seq_file; void ptdump_walk_pgd_level(struct seq_file *m, struct mm_struct *mm); void ptdump_walk_pgd_level_debugfs(struct seq_file *m, struct mm_struct *mm, bool user); -void ptdump_walk_pgd_level_checkwx(void); +bool ptdump_walk_pgd_level_checkwx(void); +#define ptdump_check_wx ptdump_walk_pgd_level_checkwx void ptdump_walk_user_pgd_level_checkwx(void); /* @@ -41,10 +42,8 @@ void ptdump_walk_user_pgd_level_checkwx(void); #define pgprot_decrypted(prot) __pgprot(cc_mkdec(pgprot_val(prot))) #ifdef CONFIG_DEBUG_WX -#define debug_checkwx() ptdump_walk_pgd_level_checkwx() #define debug_checkwx_user() ptdump_walk_user_pgd_level_checkwx() #else -#define debug_checkwx() do { } while (0) #define debug_checkwx_user() do { } while (0) #endif @@ -252,8 +251,8 @@ static inline unsigned long pgd_pfn(pgd_t pgd) return (pgd_val(pgd) & PTE_PFN_MASK) >> PAGE_SHIFT; } -#define p4d_leaf p4d_large -static inline int p4d_large(p4d_t p4d) +#define p4d_leaf p4d_leaf +static inline bool p4d_leaf(p4d_t p4d) { /* No 512 GiB pages yet */ return 0; @@ -261,14 +260,14 @@ static inline int p4d_large(p4d_t p4d) #define pte_page(pte) pfn_to_page(pte_pfn(pte)) -#define pmd_leaf pmd_large -static inline int pmd_large(pmd_t pte) +#define pmd_leaf pmd_leaf +static inline bool pmd_leaf(pmd_t pte) { return pmd_flags(pte) & _PAGE_PSE; } #ifdef CONFIG_TRANSPARENT_HUGEPAGE -/* NOTE: when predicate huge page, consider also pmd_devmap, or use pmd_large */ +/* NOTE: when predicate huge page, consider also pmd_devmap, or use pmd_leaf */ static inline int pmd_trans_huge(pmd_t pmd) { return (pmd_val(pmd) & (_PAGE_PSE|_PAGE_DEVMAP)) == _PAGE_PSE; @@ -909,7 +908,7 @@ static inline int is_new_memtype_allowed(u64 paddr, unsigned long size, pmd_t *populate_extra_pmd(unsigned long vaddr); pte_t *populate_extra_pte(unsigned long vaddr); -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION pgd_t __pti_set_user_pgtbl(pgd_t *pgdp, pgd_t pgd); /* @@ -923,12 +922,12 @@ static inline pgd_t pti_set_user_pgtbl(pgd_t *pgdp, pgd_t pgd) return pgd; return __pti_set_user_pgtbl(pgdp, pgd); } -#else /* CONFIG_PAGE_TABLE_ISOLATION */ +#else /* CONFIG_MITIGATION_PAGE_TABLE_ISOLATION */ static inline pgd_t pti_set_user_pgtbl(pgd_t *pgdp, pgd_t pgd) { return pgd; } -#endif /* CONFIG_PAGE_TABLE_ISOLATION */ +#endif /* CONFIG_MITIGATION_PAGE_TABLE_ISOLATION */ #endif /* __ASSEMBLY__ */ @@ -956,13 +955,13 @@ static inline int pte_same(pte_t a, pte_t b) return a.pte == b.pte; } -static inline pte_t pte_next_pfn(pte_t pte) +static inline pte_t pte_advance_pfn(pte_t pte, unsigned long nr) { if (__pte_needs_invert(pte_val(pte))) - return __pte(pte_val(pte) - (1UL << PFN_PTE_SHIFT)); - return __pte(pte_val(pte) + (1UL << PFN_PTE_SHIFT)); + return __pte(pte_val(pte) - (nr << PFN_PTE_SHIFT)); + return __pte(pte_val(pte) + (nr << PFN_PTE_SHIFT)); } -#define pte_next_pfn pte_next_pfn +#define pte_advance_pfn pte_advance_pfn static inline int pte_present(pte_t a) { @@ -1086,8 +1085,8 @@ static inline pmd_t *pud_pgtable(pud_t pud) */ #define pud_page(pud) pfn_to_page(pud_pfn(pud)) -#define pud_leaf pud_large -static inline int pud_large(pud_t pud) +#define pud_leaf pud_leaf +static inline bool pud_leaf(pud_t pud) { return (pud_val(pud) & (_PAGE_PSE | _PAGE_PRESENT)) == (_PAGE_PSE | _PAGE_PRESENT); @@ -1097,12 +1096,6 @@ static inline int pud_bad(pud_t pud) { return (pud_flags(pud) & ~(_KERNPG_TABLE | _PAGE_USER)) != 0; } -#else -#define pud_leaf pud_large -static inline int pud_large(pud_t pud) -{ - return 0; -} #endif /* CONFIG_PGTABLE_LEVELS > 2 */ #if CONFIG_PGTABLE_LEVELS > 3 @@ -1131,7 +1124,7 @@ static inline int p4d_bad(p4d_t p4d) { unsigned long ignore_flags = _KERNPG_TABLE | _PAGE_USER; - if (IS_ENABLED(CONFIG_PAGE_TABLE_ISOLATION)) + if (IS_ENABLED(CONFIG_MITIGATION_PAGE_TABLE_ISOLATION)) ignore_flags |= _PAGE_NX; return (p4d_flags(p4d) & ~ignore_flags) != 0; @@ -1177,7 +1170,7 @@ static inline int pgd_bad(pgd_t pgd) if (!pgtable_l5_enabled()) return 0; - if (IS_ENABLED(CONFIG_PAGE_TABLE_ISOLATION)) + if (IS_ENABLED(CONFIG_MITIGATION_PAGE_TABLE_ISOLATION)) ignore_flags |= _PAGE_NX; return (pgd_flags(pgd) & ~ignore_flags) != _KERNPG_TABLE; @@ -1419,12 +1412,12 @@ static inline bool pgdp_maps_userspace(void *__ptr) return (((ptr & ~PAGE_MASK) / sizeof(pgd_t)) < PGD_KERNEL_START); } -#define pgd_leaf pgd_large -static inline int pgd_large(pgd_t pgd) { return 0; } +#define pgd_leaf pgd_leaf +static inline bool pgd_leaf(pgd_t pgd) { return false; } -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION /* - * All top-level PAGE_TABLE_ISOLATION page tables are order-1 pages + * All top-level MITIGATION_PAGE_TABLE_ISOLATION page tables are order-1 pages * (8k-aligned and 8k in size). The kernel one is at the beginning 4k and * the user one is in the last 4k. To switch between them, you * just need to flip the 12th bit in their addresses. @@ -1469,7 +1462,7 @@ static inline p4d_t *user_to_kernel_p4dp(p4d_t *p4dp) { return ptr_clear_bit(p4dp, PTI_PGTABLE_SWITCH_BIT); } -#endif /* CONFIG_PAGE_TABLE_ISOLATION */ +#endif /* CONFIG_MITIGATION_PAGE_TABLE_ISOLATION */ /* * clone_pgd_range(pgd_t *dst, pgd_t *src, int count); @@ -1484,7 +1477,7 @@ static inline p4d_t *user_to_kernel_p4dp(p4d_t *p4dp) static inline void clone_pgd_range(pgd_t *dst, pgd_t *src, int count) { memcpy(dst, src, count * sizeof(pgd_t)); -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION if (!static_cpu_has(X86_FEATURE_PTI)) return; /* Clone the user space pgd as well */ diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h index 24af25b15..7e9db7723 100644 --- a/arch/x86/include/asm/pgtable_64.h +++ b/arch/x86/include/asm/pgtable_64.h @@ -143,7 +143,8 @@ static inline void native_set_p4d(p4d_t *p4dp, p4d_t p4d) { pgd_t pgd; - if (pgtable_l5_enabled() || !IS_ENABLED(CONFIG_PAGE_TABLE_ISOLATION)) { + if (pgtable_l5_enabled() || + !IS_ENABLED(CONFIG_MITIGATION_PAGE_TABLE_ISOLATION)) { WRITE_ONCE(*p4dp, p4d); return; } diff --git a/arch/x86/include/asm/pgtable_64_types.h b/arch/x86/include/asm/pgtable_64_types.h index 38b54b992..9053dfe9f 100644 --- a/arch/x86/include/asm/pgtable_64_types.h +++ b/arch/x86/include/asm/pgtable_64_types.h @@ -21,9 +21,9 @@ typedef unsigned long pgprotval_t; typedef struct { pteval_t pte; } pte_t; typedef struct { pmdval_t pmd; } pmd_t; -#ifdef CONFIG_X86_5LEVEL extern unsigned int __pgtable_l5_enabled; +#ifdef CONFIG_X86_5LEVEL #ifdef USE_EARLY_PGTABLE_L5 /* * cpu_feature_enabled() is not available in early boot code. diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h index b78644962..9abb8cc4c 100644 --- a/arch/x86/include/asm/pgtable_types.h +++ b/arch/x86/include/asm/pgtable_types.h @@ -567,8 +567,6 @@ static inline void update_page_count(int level, unsigned long pages) { } extern pte_t *lookup_address(unsigned long address, unsigned int *level); extern pte_t *lookup_address_in_pgd(pgd_t *pgd, unsigned long address, unsigned int *level); -pte_t *lookup_address_in_pgd_attr(pgd_t *pgd, unsigned long address, - unsigned int *level, bool *nx, bool *rw); extern pmd_t *lookup_pmd_address(unsigned long address); extern phys_addr_t slow_virt_to_phys(void *__address); extern int __init kernel_map_pages_in_pgd(pgd_t *pgd, u64 pfn, diff --git a/arch/x86/include/asm/preempt.h b/arch/x86/include/asm/preempt.h index af77235fd..919909d8c 100644 --- a/arch/x86/include/asm/preempt.h +++ b/arch/x86/include/asm/preempt.h @@ -91,7 +91,7 @@ static __always_inline void __preempt_count_sub(int val) */ static __always_inline bool __preempt_count_dec_and_test(void) { - return GEN_UNARY_RMWcc("decl", pcpu_hot.preempt_count, e, + return GEN_UNARY_RMWcc("decl", __my_cpu_var(pcpu_hot.preempt_count), e, __percpu_arg([var])); } diff --git a/arch/x86/include/asm/processor-flags.h b/arch/x86/include/asm/processor-flags.h index d8cccadc8..e5f204b9b 100644 --- a/arch/x86/include/asm/processor-flags.h +++ b/arch/x86/include/asm/processor-flags.h @@ -51,7 +51,7 @@ #define CR3_NOFLUSH 0 #endif -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION # define X86_CR3_PTI_PCID_USER_BIT 11 #endif diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 5636ad697..78e51b0d6 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -20,7 +20,6 @@ struct vm86; #include <asm/page.h> #include <asm/pgtable_types.h> #include <asm/percpu.h> -#include <asm/msr.h> #include <asm/desc_defs.h> #include <asm/nops.h> #include <asm/special_insns.h> @@ -100,6 +99,9 @@ struct cpuinfo_topology { u32 logical_pkg_id; u32 logical_die_id; + // AMD Node ID and Nodes per Package info + u32 amd_node_id; + // Cache level topology IDs u32 llc_id; u32 l2c_id; @@ -119,8 +121,6 @@ struct cpuinfo_x86 { #endif __u8 x86_virt_bits; __u8 x86_phys_bits; - /* CPUID returned core id bits: */ - __u8 x86_coreid_bits; /* Max extended CPUID function supported: */ __u32 extended_cpuid_level; /* Maximum supported CPUID level, -1=no CPUID: */ @@ -148,8 +148,6 @@ struct cpuinfo_x86 { unsigned long loops_per_jiffy; /* protected processor identification number */ u64 ppin; - /* cpuid returned max cores value: */ - u16 x86_max_cores; u16 x86_clflush_size; /* number of cores as seen by the OS: */ u16 booted_cores; @@ -186,13 +184,8 @@ extern struct cpuinfo_x86 new_cpu_data; extern __u32 cpu_caps_cleared[NCAPINTS + NBUGINTS]; extern __u32 cpu_caps_set[NCAPINTS + NBUGINTS]; -#ifdef CONFIG_SMP DECLARE_PER_CPU_READ_MOSTLY(struct cpuinfo_x86, cpu_info); #define cpu_data(cpu) per_cpu(cpu_info, cpu) -#else -#define cpu_info boot_cpu_data -#define cpu_data(cpu) boot_cpu_data -#endif extern const struct seq_operations cpuinfo_op; @@ -532,6 +525,9 @@ static __always_inline unsigned long current_top_of_stack(void) * and around vm86 mode and sp0 on x86_64 is special because of the * entry trampoline. */ + if (IS_ENABLED(CONFIG_USE_X86_SEG_SUPPORT)) + return this_cpu_read_const(const_pcpu_hot.top_of_stack); + return this_cpu_read_stable(pcpu_hot.top_of_stack); } @@ -554,7 +550,7 @@ static inline void load_sp0(unsigned long sp0) unsigned long __get_wchan(struct task_struct *p); -extern void select_idle_routine(const struct cpuinfo_x86 *c); +extern void select_idle_routine(void); extern void amd_e400_c1e_apic_setup(void); extern unsigned long boot_option_idle_override; @@ -575,28 +571,6 @@ extern void cpu_init(void); extern void cpu_init_exception_handling(void); extern void cr4_init(void); -static inline unsigned long get_debugctlmsr(void) -{ - unsigned long debugctlmsr = 0; - -#ifndef CONFIG_X86_DEBUGCTLMSR - if (boot_cpu_data.x86 < 6) - return 0; -#endif - rdmsrl(MSR_IA32_DEBUGCTLMSR, debugctlmsr); - - return debugctlmsr; -} - -static inline void update_debugctlmsr(unsigned long debugctlmsr) -{ -#ifndef CONFIG_X86_DEBUGCTLMSR - if (boot_cpu_data.x86 < 6) - return; -#endif - wrmsrl(MSR_IA32_DEBUGCTLMSR, debugctlmsr); -} - extern void set_task_blockstep(struct task_struct *task, bool on); /* Boot loader type from the setup header: */ @@ -663,8 +637,10 @@ static __always_inline void prefetchw(const void *x) #else extern unsigned long __end_init_task[]; -#define INIT_THREAD { \ - .sp = (unsigned long)&__end_init_task - sizeof(struct pt_regs), \ +#define INIT_THREAD { \ + .sp = (unsigned long)&__end_init_task - \ + TOP_OF_KERNEL_STACK_PADDING - \ + sizeof(struct pt_regs), \ } extern unsigned long KSTK_ESP(struct task_struct *task); @@ -703,12 +679,10 @@ static inline u32 per_cpu_l2c_id(unsigned int cpu) } #ifdef CONFIG_CPU_SUP_AMD -extern u32 amd_get_nodes_per_socket(void); extern u32 amd_get_highest_perf(void); extern void amd_clear_divider(void); extern void amd_check_microcode(void); #else -static inline u32 amd_get_nodes_per_socket(void) { return 0; } static inline u32 amd_get_highest_perf(void) { return 0; } static inline void amd_clear_divider(void) { } static inline void amd_check_microcode(void) { } diff --git a/arch/x86/include/asm/prom.h b/arch/x86/include/asm/prom.h index 65dee2420..043758a2e 100644 --- a/arch/x86/include/asm/prom.h +++ b/arch/x86/include/asm/prom.h @@ -23,11 +23,11 @@ extern int of_ioapic; extern u64 initial_dtb; extern void add_dtb(u64 data); void x86_of_pci_init(void); -void x86_dtb_init(void); +void x86_dtb_parse_smp_config(void); #else static inline void add_dtb(u64 data) { } static inline void x86_of_pci_init(void) { } -static inline void x86_dtb_init(void) { } +static inline void x86_dtb_parse_smp_config(void) { } #define of_ioapic 0 #endif diff --git a/arch/x86/include/asm/pti.h b/arch/x86/include/asm/pti.h index 07375b476..ab167c96b 100644 --- a/arch/x86/include/asm/pti.h +++ b/arch/x86/include/asm/pti.h @@ -3,7 +3,7 @@ #define _ASM_X86_PTI_H #ifndef __ASSEMBLY__ -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION extern void pti_init(void); extern void pti_check_boottime_disable(void); extern void pti_finalize(void); diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h index f4db78b09..5a83fbd9b 100644 --- a/arch/x86/include/asm/ptrace.h +++ b/arch/x86/include/asm/ptrace.h @@ -56,18 +56,64 @@ struct pt_regs { #else /* __i386__ */ +struct fred_cs { + /* CS selector */ + u64 cs : 16, + /* Stack level at event time */ + sl : 2, + /* IBT in WAIT_FOR_ENDBRANCH state */ + wfe : 1, + : 45; +}; + +struct fred_ss { + /* SS selector */ + u64 ss : 16, + /* STI state */ + sti : 1, + /* Set if syscall, sysenter or INT n */ + swevent : 1, + /* Event is NMI type */ + nmi : 1, + : 13, + /* Event vector */ + vector : 8, + : 8, + /* Event type */ + type : 4, + : 4, + /* Event was incident to enclave execution */ + enclave : 1, + /* CPU was in long mode */ + lm : 1, + /* + * Nested exception during FRED delivery, not set + * for #DF. + */ + nested : 1, + : 1, + /* + * The length of the instruction causing the event. + * Only set for INTO, INT1, INT3, INT n, SYSCALL + * and SYSENTER. 0 otherwise. + */ + insnlen : 4; +}; + struct pt_regs { -/* - * C ABI says these regs are callee-preserved. They aren't saved on kernel entry - * unless syscall needs a complete, fully filled "struct pt_regs". - */ + /* + * C ABI says these regs are callee-preserved. They aren't saved on + * kernel entry unless syscall needs a complete, fully filled + * "struct pt_regs". + */ unsigned long r15; unsigned long r14; unsigned long r13; unsigned long r12; unsigned long bp; unsigned long bx; -/* These regs are callee-clobbered. Always saved on kernel entry. */ + + /* These regs are callee-clobbered. Always saved on kernel entry. */ unsigned long r11; unsigned long r10; unsigned long r9; @@ -77,18 +123,50 @@ struct pt_regs { unsigned long dx; unsigned long si; unsigned long di; -/* - * On syscall entry, this is syscall#. On CPU exception, this is error code. - * On hw interrupt, it's IRQ number: - */ + + /* + * orig_ax is used on entry for: + * - the syscall number (syscall, sysenter, int80) + * - error_code stored by the CPU on traps and exceptions + * - the interrupt number for device interrupts + * + * A FRED stack frame starts here: + * 1) It _always_ includes an error code; + * + * 2) The return frame for ERET[US] starts here, but + * the content of orig_ax is ignored. + */ unsigned long orig_ax; -/* Return frame for iretq */ + + /* The IRETQ return frame starts here */ unsigned long ip; - unsigned long cs; + + union { + /* CS selector */ + u16 cs; + /* The extended 64-bit data slot containing CS */ + u64 csx; + /* The FRED CS extension */ + struct fred_cs fred_cs; + }; + unsigned long flags; unsigned long sp; - unsigned long ss; -/* top of stack page */ + + union { + /* SS selector */ + u16 ss; + /* The extended 64-bit data slot containing SS */ + u64 ssx; + /* The FRED SS extension */ + struct fred_ss fred_ss; + }; + + /* + * Top of stack on IDT systems, while FRED systems have extra fields + * defined above for storing exception related information, e.g. CR2 or + * DR6. + */ }; #endif /* !__i386__ */ diff --git a/arch/x86/include/asm/resctrl.h b/arch/x86/include/asm/resctrl.h index 255a78d9d..12dbd2588 100644 --- a/arch/x86/include/asm/resctrl.h +++ b/arch/x86/include/asm/resctrl.h @@ -7,6 +7,13 @@ #include <linux/sched.h> #include <linux/jump_label.h> +/* + * This value can never be a valid CLOSID, and is used when mapping a + * (closid, rmid) pair to an index and back. On x86 only the RMID is + * needed. The index is a software defined value. + */ +#define X86_RESCTRL_EMPTY_CLOSID ((u32)~0) + /** * struct resctrl_pqr_state - State cache for the PQR MSR * @cur_rmid: The cached Resource Monitoring ID @@ -31,10 +38,47 @@ struct resctrl_pqr_state { DECLARE_PER_CPU(struct resctrl_pqr_state, pqr_state); +extern bool rdt_alloc_capable; +extern bool rdt_mon_capable; + DECLARE_STATIC_KEY_FALSE(rdt_enable_key); DECLARE_STATIC_KEY_FALSE(rdt_alloc_enable_key); DECLARE_STATIC_KEY_FALSE(rdt_mon_enable_key); +static inline bool resctrl_arch_alloc_capable(void) +{ + return rdt_alloc_capable; +} + +static inline void resctrl_arch_enable_alloc(void) +{ + static_branch_enable_cpuslocked(&rdt_alloc_enable_key); + static_branch_inc_cpuslocked(&rdt_enable_key); +} + +static inline void resctrl_arch_disable_alloc(void) +{ + static_branch_disable_cpuslocked(&rdt_alloc_enable_key); + static_branch_dec_cpuslocked(&rdt_enable_key); +} + +static inline bool resctrl_arch_mon_capable(void) +{ + return rdt_mon_capable; +} + +static inline void resctrl_arch_enable_mon(void) +{ + static_branch_enable_cpuslocked(&rdt_mon_enable_key); + static_branch_inc_cpuslocked(&rdt_enable_key); +} + +static inline void resctrl_arch_disable_mon(void) +{ + static_branch_disable_cpuslocked(&rdt_mon_enable_key); + static_branch_dec_cpuslocked(&rdt_enable_key); +} + /* * __resctrl_sched_in() - Writes the task's CLOSid/RMID to IA32_PQR_MSR * @@ -88,12 +132,58 @@ static inline unsigned int resctrl_arch_round_mon_val(unsigned int val) return val * scale; } +static inline void resctrl_arch_set_closid_rmid(struct task_struct *tsk, + u32 closid, u32 rmid) +{ + WRITE_ONCE(tsk->closid, closid); + WRITE_ONCE(tsk->rmid, rmid); +} + +static inline bool resctrl_arch_match_closid(struct task_struct *tsk, u32 closid) +{ + return READ_ONCE(tsk->closid) == closid; +} + +static inline bool resctrl_arch_match_rmid(struct task_struct *tsk, u32 ignored, + u32 rmid) +{ + return READ_ONCE(tsk->rmid) == rmid; +} + static inline void resctrl_sched_in(struct task_struct *tsk) { if (static_branch_likely(&rdt_enable_key)) __resctrl_sched_in(tsk); } +static inline u32 resctrl_arch_system_num_rmid_idx(void) +{ + /* RMID are independent numbers for x86. num_rmid_idx == num_rmid */ + return boot_cpu_data.x86_cache_max_rmid + 1; +} + +static inline void resctrl_arch_rmid_idx_decode(u32 idx, u32 *closid, u32 *rmid) +{ + *rmid = idx; + *closid = X86_RESCTRL_EMPTY_CLOSID; +} + +static inline u32 resctrl_arch_rmid_idx_encode(u32 ignored, u32 rmid) +{ + return rmid; +} + +/* x86 can always read an rmid, nothing needs allocating */ +struct rdt_resource; +static inline void *resctrl_arch_mon_ctx_alloc(struct rdt_resource *r, int evtid) +{ + might_sleep(); + return NULL; +}; + +static inline void resctrl_arch_mon_ctx_free(struct rdt_resource *r, int evtid, + void *ctx) { }; + void resctrl_cpu_detect(struct cpuinfo_x86 *c); #else diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index 5c83729c8..e61e68d71 100644 --- a/arch/x86/include/asm/setup.h +++ b/arch/x86/include/asm/setup.h @@ -48,7 +48,7 @@ extern unsigned long saved_video_mode; extern void reserve_standard_io_resources(void); extern void i386_reserve_resources(void); extern unsigned long __startup_64(unsigned long physaddr, struct boot_params *bp); -extern void startup_64_setup_env(unsigned long physbase); +extern void startup_64_setup_gdt_idt(void); extern void early_setup_idt(void); extern void __init do_early_exception(struct pt_regs *regs, int trapnr); diff --git a/arch/x86/include/asm/setup_data.h b/arch/x86/include/asm/setup_data.h new file mode 100644 index 000000000..77c51111a --- /dev/null +++ b/arch/x86/include/asm/setup_data.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_X86_SETUP_DATA_H +#define _ASM_X86_SETUP_DATA_H + +#include <uapi/asm/setup_data.h> + +#ifndef __ASSEMBLY__ + +struct pci_setup_rom { + struct setup_data data; + uint16_t vendor; + uint16_t devid; + uint64_t pcilen; + unsigned long segment; + unsigned long bus; + unsigned long device; + unsigned long function; + uint8_t romdata[]; +}; + +/* kexec external ABI */ +struct efi_setup_data { + u64 fw_vendor; + u64 __unused; + u64 tables; + u64 smbios; + u64 reserved[8]; +}; + +#endif /* __ASSEMBLY__ */ + +#endif /* _ASM_X86_SETUP_DATA_H */ diff --git a/arch/x86/include/asm/sev.h b/arch/x86/include/asm/sev.h index 75a5388d4..93ed60080 100644 --- a/arch/x86/include/asm/sev.h +++ b/arch/x86/include/asm/sev.h @@ -13,7 +13,6 @@ #include <asm/insn.h> #include <asm/sev-common.h> -#include <asm/bootparam.h> #include <asm/coco.h> #define GHCB_PROTOCOL_MIN 1ULL @@ -22,6 +21,8 @@ #define VMGEXIT() { asm volatile("rep; vmmcall\n\r"); } +struct boot_params; + enum es_result { ES_OK, /* All good */ ES_UNSUPPORTED, /* Requested operation not supported */ @@ -87,9 +88,23 @@ extern bool handle_vc_boot_ghcb(struct pt_regs *regs); /* Software defined (when rFlags.CF = 1) */ #define PVALIDATE_FAIL_NOUPDATE 255 +/* RMUPDATE detected 4K page and 2MB page overlap. */ +#define RMPUPDATE_FAIL_OVERLAP 4 + /* RMP page size */ #define RMP_PG_SIZE_4K 0 #define RMP_PG_SIZE_2M 1 +#define RMP_TO_PG_LEVEL(level) (((level) == RMP_PG_SIZE_4K) ? PG_LEVEL_4K : PG_LEVEL_2M) +#define PG_LEVEL_TO_RMP(level) (((level) == PG_LEVEL_4K) ? RMP_PG_SIZE_4K : RMP_PG_SIZE_2M) + +struct rmp_state { + u64 gpa; + u8 assigned; + u8 pagesize; + u8 immutable; + u8 rsvd; + u32 asid; +} __packed; #define RMPADJUST_VMSA_PAGE_BIT BIT(16) @@ -213,6 +228,7 @@ int snp_issue_guest_request(u64 exit_code, struct snp_req_data *input, struct sn void snp_accept_memory(phys_addr_t start, phys_addr_t end); u64 snp_get_unsupported_features(u64 status); u64 sev_get_status(void); +void sev_show_status(void); #else static inline void sev_es_ist_enter(struct pt_regs *regs) { } static inline void sev_es_ist_exit(void) { } @@ -241,6 +257,33 @@ static inline int snp_issue_guest_request(u64 exit_code, struct snp_req_data *in static inline void snp_accept_memory(phys_addr_t start, phys_addr_t end) { } static inline u64 snp_get_unsupported_features(u64 status) { return 0; } static inline u64 sev_get_status(void) { return 0; } +static inline void sev_show_status(void) { } +#endif + +#ifdef CONFIG_KVM_AMD_SEV +bool snp_probe_rmptable_info(void); +int snp_lookup_rmpentry(u64 pfn, bool *assigned, int *level); +void snp_dump_hva_rmpentry(unsigned long address); +int psmash(u64 pfn); +int rmp_make_private(u64 pfn, u64 gpa, enum pg_level level, u32 asid, bool immutable); +int rmp_make_shared(u64 pfn, enum pg_level level); +void snp_leak_pages(u64 pfn, unsigned int npages); +void kdump_sev_callback(void); +void snp_fixup_e820_tables(void); +#else +static inline bool snp_probe_rmptable_info(void) { return false; } +static inline int snp_lookup_rmpentry(u64 pfn, bool *assigned, int *level) { return -ENODEV; } +static inline void snp_dump_hva_rmpentry(unsigned long address) {} +static inline int psmash(u64 pfn) { return -ENODEV; } +static inline int rmp_make_private(u64 pfn, u64 gpa, enum pg_level level, u32 asid, + bool immutable) +{ + return -ENODEV; +} +static inline int rmp_make_shared(u64 pfn, enum pg_level level) { return -ENODEV; } +static inline void snp_leak_pages(u64 pfn, unsigned int npages) {} +static inline void kdump_sev_callback(void) { } +static inline void snp_fixup_e820_tables(void) {} #endif #endif diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h index 4fab2ed45..a35936b51 100644 --- a/arch/x86/include/asm/smp.h +++ b/arch/x86/include/asm/smp.h @@ -8,9 +8,6 @@ #include <asm/current.h> #include <asm/thread_info.h> -extern int smp_num_siblings; -extern unsigned int num_processors; - DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_sibling_map); DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_core_map); DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_die_map); @@ -59,11 +56,6 @@ static inline void stop_other_cpus(void) smp_ops.stop_other_cpus(1); } -static inline void smp_prepare_boot_cpu(void) -{ - smp_ops.smp_prepare_boot_cpu(); -} - static inline void smp_prepare_cpus(unsigned int max_cpus) { smp_ops.smp_prepare_cpus(max_cpus); @@ -110,7 +102,6 @@ void cpu_disable_common(void); void native_smp_prepare_boot_cpu(void); void smp_prepare_cpus_common(void); void native_smp_prepare_cpus(unsigned int max_cpus); -void calculate_max_logical_packages(void); void native_smp_cpus_done(unsigned int max_cpus); int common_cpu_up(unsigned int cpunum, struct task_struct *tidle); int native_kick_ap(unsigned int cpu, struct task_struct *tidle); @@ -174,8 +165,6 @@ static inline struct cpumask *cpu_llc_shared_mask(int cpu) } #endif /* CONFIG_SMP */ -extern unsigned disabled_cpus; - #ifdef CONFIG_DEBUG_NMI_SELFTEST extern void nmi_selftest(void); #else diff --git a/arch/x86/include/asm/sparsemem.h b/arch/x86/include/asm/sparsemem.h index 64df897c0..1be13b2df 100644 --- a/arch/x86/include/asm/sparsemem.h +++ b/arch/x86/include/asm/sparsemem.h @@ -37,6 +37,8 @@ extern int phys_to_target_node(phys_addr_t start); #define phys_to_target_node phys_to_target_node extern int memory_add_physaddr_to_nid(u64 start); #define memory_add_physaddr_to_nid memory_add_physaddr_to_nid +extern int numa_fill_memblks(u64 start, u64 end); +#define numa_fill_memblks numa_fill_memblks #endif #endif /* __ASSEMBLY__ */ diff --git a/arch/x86/include/asm/spec-ctrl.h b/arch/x86/include/asm/spec-ctrl.h index c648502e4..658b690b2 100644 --- a/arch/x86/include/asm/spec-ctrl.h +++ b/arch/x86/include/asm/spec-ctrl.h @@ -96,4 +96,6 @@ static inline void speculative_store_bypass_ht_init(void) { } extern void speculation_ctrl_update(unsigned long tif); extern void speculation_ctrl_update_current(void); +extern bool itlb_multihit_kvm_mitigation; + #endif diff --git a/arch/x86/include/asm/special_insns.h b/arch/x86/include/asm/special_insns.h index 09a5461d7..2e9fc5c40 100644 --- a/arch/x86/include/asm/special_insns.h +++ b/arch/x86/include/asm/special_insns.h @@ -2,11 +2,11 @@ #ifndef _ASM_X86_SPECIAL_INSNS_H #define _ASM_X86_SPECIAL_INSNS_H - #ifdef __KERNEL__ - #include <asm/nops.h> #include <asm/processor-flags.h> + +#include <linux/errno.h> #include <linux/irqflags.h> #include <linux/jump_label.h> diff --git a/arch/x86/include/asm/static_call.h b/arch/x86/include/asm/static_call.h index 343b722cc..125c407e2 100644 --- a/arch/x86/include/asm/static_call.h +++ b/arch/x86/include/asm/static_call.h @@ -46,7 +46,7 @@ #define ARCH_DEFINE_STATIC_CALL_TRAMP(name, func) \ __ARCH_DEFINE_STATIC_CALL_TRAMP(name, ".byte 0xe9; .long " #func " - (. + 4)") -#ifdef CONFIG_RETHUNK +#ifdef CONFIG_MITIGATION_RETHUNK #define ARCH_DEFINE_STATIC_CALL_NULL_TRAMP(name) \ __ARCH_DEFINE_STATIC_CALL_TRAMP(name, "jmp __x86_return_thunk") #else diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h index 87a7b917d..728c98175 100644 --- a/arch/x86/include/asm/svm.h +++ b/arch/x86/include/asm/svm.h @@ -358,10 +358,10 @@ struct sev_es_save_area { struct vmcb_seg ldtr; struct vmcb_seg idtr; struct vmcb_seg tr; - u64 vmpl0_ssp; - u64 vmpl1_ssp; - u64 vmpl2_ssp; - u64 vmpl3_ssp; + u64 pl0_ssp; + u64 pl1_ssp; + u64 pl2_ssp; + u64 pl3_ssp; u64 u_cet; u8 reserved_0xc8[2]; u8 vmpl; diff --git a/arch/x86/include/asm/switch_to.h b/arch/x86/include/asm/switch_to.h index f42dbf17f..c3bd0c075 100644 --- a/arch/x86/include/asm/switch_to.h +++ b/arch/x86/include/asm/switch_to.h @@ -70,9 +70,13 @@ static inline void update_task_stack(struct task_struct *task) #ifdef CONFIG_X86_32 this_cpu_write(cpu_tss_rw.x86_tss.sp1, task->thread.sp0); #else - /* Xen PV enters the kernel on the thread stack. */ - if (cpu_feature_enabled(X86_FEATURE_XENPV)) + if (cpu_feature_enabled(X86_FEATURE_FRED)) { + /* WRMSRNS is a baseline feature for FRED. */ + wrmsrns(MSR_IA32_FRED_RSP0, (unsigned long)task_stack_page(task) + THREAD_SIZE); + } else if (cpu_feature_enabled(X86_FEATURE_XENPV)) { + /* Xen PV enters the kernel on the thread stack. */ load_sp0(task_top_of_stack(task)); + } #endif } diff --git a/arch/x86/include/asm/text-patching.h b/arch/x86/include/asm/text-patching.h index 0b70653a9..345aafbc1 100644 --- a/arch/x86/include/asm/text-patching.h +++ b/arch/x86/include/asm/text-patching.h @@ -15,6 +15,8 @@ extern void text_poke_early(void *addr, const void *opcode, size_t len); +extern void apply_relocation(u8 *buf, size_t len, u8 *dest, u8 *src, size_t src_len); + /* * Clear and restore the kernel write-protection flag on the local CPU. * Allows the kernel to edit read-only pages. diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h index d63b02940..12da7dfd5 100644 --- a/arch/x86/include/asm/thread_info.h +++ b/arch/x86/include/asm/thread_info.h @@ -31,7 +31,9 @@ * In vm86 mode, the hardware frame is much longer still, so add 16 * bytes to make room for the real-mode segments. * - * x86_64 has a fixed-length stack frame. + * x86-64 has a fixed-length stack frame, but it depends on whether + * or not FRED is enabled. Future versions of FRED might make this + * dynamic, but for now it is always 2 words longer. */ #ifdef CONFIG_X86_32 # ifdef CONFIG_VM86 @@ -39,8 +41,12 @@ # else # define TOP_OF_KERNEL_STACK_PADDING 8 # endif -#else -# define TOP_OF_KERNEL_STACK_PADDING 0 +#else /* x86-64 */ +# ifdef CONFIG_X86_FRED +# define TOP_OF_KERNEL_STACK_PADDING (2 * 8) +# else +# define TOP_OF_KERNEL_STACK_PADDING 0 +# endif #endif /* diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h index 5f87f6b9b..abe3a8f22 100644 --- a/arch/x86/include/asm/topology.h +++ b/arch/x86/include/asm/topology.h @@ -102,6 +102,35 @@ static inline void setup_node_to_cpumask_map(void) { } #include <asm-generic/topology.h> +/* Topology information */ +enum x86_topology_domains { + TOPO_SMT_DOMAIN, + TOPO_CORE_DOMAIN, + TOPO_MODULE_DOMAIN, + TOPO_TILE_DOMAIN, + TOPO_DIE_DOMAIN, + TOPO_DIEGRP_DOMAIN, + TOPO_PKG_DOMAIN, + TOPO_MAX_DOMAIN, +}; + +struct x86_topology_system { + unsigned int dom_shifts[TOPO_MAX_DOMAIN]; + unsigned int dom_size[TOPO_MAX_DOMAIN]; +}; + +extern struct x86_topology_system x86_topo_system; + +static inline unsigned int topology_get_domain_size(enum x86_topology_domains dom) +{ + return x86_topo_system.dom_size[dom]; +} + +static inline unsigned int topology_get_domain_shift(enum x86_topology_domains dom) +{ + return dom == TOPO_SMT_DOMAIN ? 0 : x86_topo_system.dom_shifts[dom - 1]; +} + extern const struct cpumask *cpu_coregroup_mask(int cpu); extern const struct cpumask *cpu_clustergroup_mask(int cpu); @@ -112,7 +141,42 @@ extern const struct cpumask *cpu_clustergroup_mask(int cpu); #define topology_core_id(cpu) (cpu_data(cpu).topo.core_id) #define topology_ppin(cpu) (cpu_data(cpu).ppin) -extern unsigned int __max_die_per_package; +#define topology_amd_node_id(cpu) (cpu_data(cpu).topo.amd_node_id) + +extern unsigned int __max_dies_per_package; +extern unsigned int __max_logical_packages; +extern unsigned int __max_threads_per_core; +extern unsigned int __num_threads_per_package; +extern unsigned int __num_cores_per_package; + +static inline unsigned int topology_max_packages(void) +{ + return __max_logical_packages; +} + +static inline unsigned int topology_max_dies_per_package(void) +{ + return __max_dies_per_package; +} + +static inline unsigned int topology_num_cores_per_package(void) +{ + return __num_cores_per_package; +} + +static inline unsigned int topology_num_threads_per_package(void) +{ + return __num_threads_per_package; +} + +#ifdef CONFIG_X86_LOCAL_APIC +int topology_get_logical_id(u32 apicid, enum x86_topology_domains at_level); +#else +static inline int topology_get_logical_id(u32 apicid, enum x86_topology_domains at_level) +{ + return 0; +} +#endif #ifdef CONFIG_SMP #define topology_cluster_id(cpu) (cpu_data(cpu).topo.l2c_id) @@ -121,12 +185,11 @@ extern unsigned int __max_die_per_package; #define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu)) #define topology_sibling_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu)) -extern unsigned int __max_logical_packages; -#define topology_max_packages() (__max_logical_packages) -static inline int topology_max_die_per_package(void) +static inline int topology_phys_to_logical_pkg(unsigned int pkg) { - return __max_die_per_package; + return topology_get_logical_id(pkg << x86_topo_system.dom_shifts[TOPO_PKG_DOMAIN], + TOPO_PKG_DOMAIN); } extern int __max_smt_threads; @@ -138,9 +201,12 @@ static inline int topology_max_smt_threads(void) #include <linux/cpu_smt.h> -int topology_update_package_map(unsigned int apicid, unsigned int cpu); -int topology_update_die_map(unsigned int dieid, unsigned int cpu); -int topology_phys_to_logical_pkg(unsigned int pkg); +extern unsigned int __amd_nodes_per_pkg; + +static inline unsigned int topology_amd_nodes_per_pkg(void) +{ + return __amd_nodes_per_pkg; +} extern struct cpumask __cpu_primary_thread_mask; #define cpu_primary_thread_mask ((const struct cpumask *)&__cpu_primary_thread_mask) @@ -153,16 +219,12 @@ static inline bool topology_is_primary_thread(unsigned int cpu) { return cpumask_test_cpu(cpu, cpu_primary_thread_mask); } + #else /* CONFIG_SMP */ -#define topology_max_packages() (1) -static inline int -topology_update_package_map(unsigned int apicid, unsigned int cpu) { return 0; } -static inline int -topology_update_die_map(unsigned int dieid, unsigned int cpu) { return 0; } static inline int topology_phys_to_logical_pkg(unsigned int pkg) { return 0; } -static inline int topology_max_die_per_package(void) { return 1; } static inline int topology_max_smt_threads(void) { return 1; } static inline bool topology_is_primary_thread(unsigned int cpu) { return true; } +static inline unsigned int topology_amd_nodes_per_pkg(void) { return 1; } #endif /* !CONFIG_SMP */ static inline void arch_fix_phys_package_id(int num, u32 slot) diff --git a/arch/x86/include/asm/trap_pf.h b/arch/x86/include/asm/trap_pf.h index afa524325..a23a7b707 100644 --- a/arch/x86/include/asm/trap_pf.h +++ b/arch/x86/include/asm/trap_pf.h @@ -2,6 +2,8 @@ #ifndef _ASM_X86_TRAP_PF_H #define _ASM_X86_TRAP_PF_H +#include <linux/bits.h> + /* * Page fault error code bits: * @@ -13,16 +15,18 @@ * bit 5 == 1: protection keys block access * bit 6 == 1: shadow stack access fault * bit 15 == 1: SGX MMU page-fault + * bit 31 == 1: fault was due to RMP violation */ enum x86_pf_error_code { - X86_PF_PROT = 1 << 0, - X86_PF_WRITE = 1 << 1, - X86_PF_USER = 1 << 2, - X86_PF_RSVD = 1 << 3, - X86_PF_INSTR = 1 << 4, - X86_PF_PK = 1 << 5, - X86_PF_SHSTK = 1 << 6, - X86_PF_SGX = 1 << 15, + X86_PF_PROT = BIT(0), + X86_PF_WRITE = BIT(1), + X86_PF_USER = BIT(2), + X86_PF_RSVD = BIT(3), + X86_PF_INSTR = BIT(4), + X86_PF_PK = BIT(5), + X86_PF_SHSTK = BIT(6), + X86_PF_SGX = BIT(15), + X86_PF_RMP = BIT(31), }; #endif /* _ASM_X86_TRAP_PF_H */ diff --git a/arch/x86/include/asm/trapnr.h b/arch/x86/include/asm/trapnr.h index f5d2325aa..8d1154cdf 100644 --- a/arch/x86/include/asm/trapnr.h +++ b/arch/x86/include/asm/trapnr.h @@ -2,6 +2,18 @@ #ifndef _ASM_X86_TRAPNR_H #define _ASM_X86_TRAPNR_H +/* + * Event type codes used by FRED, Intel VT-x and AMD SVM + */ +#define EVENT_TYPE_EXTINT 0 // External interrupt +#define EVENT_TYPE_RESERVED 1 +#define EVENT_TYPE_NMI 2 // NMI +#define EVENT_TYPE_HWEXC 3 // Hardware originated traps, exceptions +#define EVENT_TYPE_SWINT 4 // INT n +#define EVENT_TYPE_PRIV_SWEXC 5 // INT1 +#define EVENT_TYPE_SWEXC 6 // INTO, INT3 +#define EVENT_TYPE_OTHER 7 // FRED SYSCALL/SYSENTER, VT-x MTF + /* Interrupts/Exceptions */ #define X86_TRAP_DE 0 /* Divide-by-zero */ diff --git a/arch/x86/include/asm/tsc.h b/arch/x86/include/asm/tsc.h index 594fce0ca..405efb3e4 100644 --- a/arch/x86/include/asm/tsc.h +++ b/arch/x86/include/asm/tsc.h @@ -5,8 +5,9 @@ #ifndef _ASM_X86_TSC_H #define _ASM_X86_TSC_H -#include <asm/processor.h> #include <asm/cpufeature.h> +#include <asm/processor.h> +#include <asm/msr.h> /* * Standard way to access the cycle counter. diff --git a/arch/x86/include/asm/uaccess_64.h b/arch/x86/include/asm/uaccess_64.h index f2c02e446..04789f45a 100644 --- a/arch/x86/include/asm/uaccess_64.h +++ b/arch/x86/include/asm/uaccess_64.h @@ -11,6 +11,7 @@ #include <asm/alternative.h> #include <asm/cpufeatures.h> #include <asm/page.h> +#include <asm/percpu.h> #ifdef CONFIG_ADDRESS_MASKING /* @@ -18,14 +19,10 @@ */ static inline unsigned long __untagged_addr(unsigned long addr) { - /* - * Refer tlbstate_untag_mask directly to avoid RIP-relative relocation - * in alternative instructions. The relocation gets wrong when gets - * copied to the target place. - */ asm (ALTERNATIVE("", - "and %%gs:tlbstate_untag_mask, %[addr]\n\t", X86_FEATURE_LAM) - : [addr] "+r" (addr) : "m" (tlbstate_untag_mask)); + "and " __percpu_arg([mask]) ", %[addr]", X86_FEATURE_LAM) + : [addr] "+r" (addr) + : [mask] "m" (__my_cpu_var(tlbstate_untag_mask))); return addr; } @@ -54,7 +51,7 @@ static inline unsigned long __untagged_addr_remote(struct mm_struct *mm, * half and a user half. When cast to a signed type, user pointers * are positive and kernel pointers are negative. */ -#define valid_user_address(x) ((long)(x) >= 0) +#define valid_user_address(x) ((__force long)(x) >= 0) /* * User pointers can have tag bits on x86-64. This scheme tolerates @@ -87,8 +84,9 @@ static inline bool __access_ok(const void __user *ptr, unsigned long size) if (__builtin_constant_p(size <= PAGE_SIZE) && size <= PAGE_SIZE) { return valid_user_address(ptr); } else { - unsigned long sum = size + (unsigned long)ptr; - return valid_user_address(sum) && sum >= (unsigned long)ptr; + unsigned long sum = size + (__force unsigned long)ptr; + + return valid_user_address(sum) && sum >= (__force unsigned long)ptr; } } #define __access_ok __access_ok diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h index 0e73616b8..4dba17363 100644 --- a/arch/x86/include/asm/vmx.h +++ b/arch/x86/include/asm/vmx.h @@ -17,6 +17,7 @@ #include <linux/types.h> #include <uapi/asm/vmx.h> +#include <asm/trapnr.h> #include <asm/vmxfeatures.h> #define VMCS_CONTROL_BIT(x) BIT(VMX_FEATURE_##x & 0x1f) @@ -374,14 +375,14 @@ enum vmcs_field { #define VECTORING_INFO_DELIVER_CODE_MASK INTR_INFO_DELIVER_CODE_MASK #define VECTORING_INFO_VALID_MASK INTR_INFO_VALID_MASK -#define INTR_TYPE_EXT_INTR (0 << 8) /* external interrupt */ -#define INTR_TYPE_RESERVED (1 << 8) /* reserved */ -#define INTR_TYPE_NMI_INTR (2 << 8) /* NMI */ -#define INTR_TYPE_HARD_EXCEPTION (3 << 8) /* processor exception */ -#define INTR_TYPE_SOFT_INTR (4 << 8) /* software interrupt */ -#define INTR_TYPE_PRIV_SW_EXCEPTION (5 << 8) /* ICE breakpoint - undocumented */ -#define INTR_TYPE_SOFT_EXCEPTION (6 << 8) /* software exception */ -#define INTR_TYPE_OTHER_EVENT (7 << 8) /* other event */ +#define INTR_TYPE_EXT_INTR (EVENT_TYPE_EXTINT << 8) /* external interrupt */ +#define INTR_TYPE_RESERVED (EVENT_TYPE_RESERVED << 8) /* reserved */ +#define INTR_TYPE_NMI_INTR (EVENT_TYPE_NMI << 8) /* NMI */ +#define INTR_TYPE_HARD_EXCEPTION (EVENT_TYPE_HWEXC << 8) /* processor exception */ +#define INTR_TYPE_SOFT_INTR (EVENT_TYPE_SWINT << 8) /* software interrupt */ +#define INTR_TYPE_PRIV_SW_EXCEPTION (EVENT_TYPE_PRIV_SWEXC << 8) /* ICE breakpoint */ +#define INTR_TYPE_SOFT_EXCEPTION (EVENT_TYPE_SWEXC << 8) /* software exception */ +#define INTR_TYPE_OTHER_EVENT (EVENT_TYPE_OTHER << 8) /* other event */ /* GUEST_INTERRUPTIBILITY_INFO flags. */ #define GUEST_INTR_STATE_STI 0x00000001 diff --git a/arch/x86/include/asm/vmxfeatures.h b/arch/x86/include/asm/vmxfeatures.h index c6a7eed03..266daf5b5 100644 --- a/arch/x86/include/asm/vmxfeatures.h +++ b/arch/x86/include/asm/vmxfeatures.h @@ -25,6 +25,7 @@ #define VMX_FEATURE_EPT_EXECUTE_ONLY ( 0*32+ 17) /* "ept_x_only" EPT entries can be execute only */ #define VMX_FEATURE_EPT_AD ( 0*32+ 18) /* EPT Accessed/Dirty bits */ #define VMX_FEATURE_EPT_1GB ( 0*32+ 19) /* 1GB EPT pages */ +#define VMX_FEATURE_EPT_5LEVEL ( 0*32+ 20) /* 5-level EPT paging */ /* Aggregated APIC features 24-27 */ #define VMX_FEATURE_FLEXPRIORITY ( 0*32+ 24) /* TPR shadow + virt APIC */ diff --git a/arch/x86/include/asm/word-at-a-time.h b/arch/x86/include/asm/word-at-a-time.h index 46b4f1f7f..e8d7d4941 100644 --- a/arch/x86/include/asm/word-at-a-time.h +++ b/arch/x86/include/asm/word-at-a-time.h @@ -2,7 +2,8 @@ #ifndef _ASM_WORD_AT_A_TIME_H #define _ASM_WORD_AT_A_TIME_H -#include <linux/kernel.h> +#include <linux/bitops.h> +#include <linux/wordpart.h> /* * This is largely generic for little-endian machines, but the diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index 550dcbbbb..6149eabe2 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -2,8 +2,6 @@ #ifndef _ASM_X86_PLATFORM_H #define _ASM_X86_PLATFORM_H -#include <asm/bootparam.h> - struct ghcb; struct mpc_bus; struct mpc_cpu; @@ -15,13 +13,15 @@ struct irq_domain; /** * struct x86_init_mpparse - platform specific mpparse ops * @setup_ioapic_ids: platform specific ioapic id override - * @find_smp_config: find the smp configuration - * @get_smp_config: get the smp configuration + * @find_mptable: Find MPTABLE early to reserve the memory region + * @early_parse_smp_cfg: Parse the SMP configuration data early before initmem_init() + * @parse_smp_cfg: Parse the SMP configuration data */ struct x86_init_mpparse { void (*setup_ioapic_ids)(void); - void (*find_smp_config)(void); - void (*get_smp_config)(unsigned int early); + void (*find_mptable)(void); + void (*early_parse_smp_cfg)(void); + void (*parse_smp_cfg)(void); }; /** |